6.7.0 - Alpha8 - 新增 cvt/fmt 模块及 (cvt/fmt/s13n).bytes 方法, 用于字节数据处理

.changelog/lang_zh-Hans.json

@@ -3,8 +3,13 @@
     "v6.7.0": {
       "released_date": "2025/10/26",
       "feature": [
+        "cvt 模块, 用于数据单位转换 (参阅 项目文档 > [单位转换](https://docs.autojs6.com/#/cvt))",
+        "fmt 模块, 用于数据格式化 (参阅 项目文档 > [格式化](https://docs.autojs6.com/#/fmt))",
         "zip 模块, 用于文件压缩与解压缩操作 (Ref to [Auto.js Pro](https://g.pro.autojs.org/)) (参阅 项目文档 > [Zip](https://docs.autojs6.com/#/zip))",
         "mediainfo 模块, 用于查看媒体文件的详细信息 (参阅 项目文档 > [媒体信息](https://docs.autojs6.com/#/mediainfo))",
+        "cvt.bytes 方法, 用于字节数据单位转换 (参阅 项目文档 > [单位转换](https://docs.autojs6.com/#/cvt))",
+        "fmt.bytes 方法, 用于字节数据格式化 (参阅 项目文档 > [数据格式化](https://docs.autojs6.com/#/fmt))",
+        "s13n.bytes 方法, 用于标准化字节数据 (参阅 项目文档 > [标准化](https://docs.autojs6.com/#/s13n))",
         "UiObject#isShifted 方法, 用于检测控件位置变化",
         "device.getSharedDeviceId 方法, 用于跨应用获取统一共享设备 ID _[`issue #455`](http://issues.autojs6.com/455)_",
         "structuredClone 全局方法, 用于深拷贝 JavaScript 对象 (参阅 [MDN](https://developer.mozilla.org/zh-CN/docs/Web/API/Window/structuredClone))",

app/src/main/java/org/autojs/autojs/extension/AnyExtensions.kt

@@ -17,6 +17,7 @@ import org.mozilla.javascript.NativeError
 import org.mozilla.javascript.Scriptable
 import org.mozilla.javascript.UniqueTag.NOT_FOUND
 import org.mozilla.javascript.Wrapper
+import java.math.BigInteger
 
 object AnyExtensions {
 
@@ -82,8 +83,8 @@ object AnyExtensions {
     fun <T> T?.jsSanitize() = if (this.isJsNullish()) null else this
 
     fun Any?.jsUnwrapped(): Any? = when (this) {
-        is String -> this
+        is String, is ConsString -> Context.toString(this)
-        is ConsString -> this.toString()
+        is BigInteger -> this
         is Number -> Context.toNumber(this)
         is Boolean -> Context.toBoolean(this)
         is Wrapper -> this.unwrap().jsUnwrapped()

app/src/main/java/org/autojs/autojs/pio/PFiles.kt

@@ -4,7 +4,7 @@ import android.content.Context
 import android.content.res.AssetManager
 import android.text.TextUtils
 import org.autojs.autojs.app.GlobalAppContext
-import org.autojs.autojs.core.pref.Language
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes
 import org.autojs.autojs.tool.Func1
 import org.autojs.autojs.util.EnvironmentUtils
 import org.autojs.autojs.util.FileUtils
@@ -19,8 +19,6 @@ import java.io.IOException
 import java.io.InputStream
 import java.io.OutputStream
 import java.nio.charset.Charset
-import kotlin.math.ln
-import kotlin.math.pow
 
 /**
  * Created by Stardust on Apr 1, 2017.
@@ -60,14 +58,9 @@ object PFiles {
     @JvmStatic
     fun create(path: String): Boolean {
         val f = File(path)
-        return if (path.endsWith(separator)) {
+        return when {
-            f.mkdir()
+            path.endsWith(separator) -> f.mkdir()
-        } else {
+            else -> runCatching { f.createNewFile() }.isSuccess
-            try {
-                f.createNewFile()
-            } catch (e: IOException) {
-                false
-            }
         }
     }
 
@@ -95,7 +88,7 @@ object PFiles {
     fun ensureDir(path: String): Boolean {
         val i = path.lastIndexOf(separator)
         return if (i >= 0) {
-            val folder = path.substring(0, i)
+            val folder = path.take(i)
             val file = File(folder)
             file.exists() || file.mkdirs()
         } else false
@@ -355,7 +348,7 @@ object PFiles {
         val fileName = getName(filePath)
         var b = fileName.lastIndexOf('.')
         if (b < 0) b = fileName.length
-        return fileName.substring(0, b)
+        return fileName.take(b)
     }
 
     fun copyAssetToTmpFile(context: Context, path: String): File {
@@ -450,14 +443,18 @@ object PFiles {
     }
 
     @JvmStatic
-    fun getHumanReadableSize(bytes: Long): String {
+    @JvmOverloads
-        val unit = 1024
+    fun getHumanReadableSize(bytes: Long, useIecIdentifier: Boolean = false): String {
-        if (bytes < unit) return "$bytes B"
+        return Bytes.string(
-        val exp = (ln(bytes.toDouble()) / ln(unit.toDouble())).toInt()
+            source = bytes.toDouble(),
-
+            fromUnit = "B",
-        @Suppress("SpellCheckingInspection")
+            toUnit = "AUTO",
-        val pre = "KMGTPE".substring(exp - 1, exp)
+            useIecIdentifier = useIecIdentifier,
-        return String.format(Language.getPrefLanguage().locale, "%.1f %sB", bytes / unit.toDouble().pow(exp.toDouble()), pre)
+            useSpace = true,
+            fractionDigits = 1,
+            trimTrailingZero = false,
+            signature = "PFiles.getHumanReadableSize",
+        )
     }
 
     @JvmStatic
@@ -511,10 +508,6 @@ object PFiles {
 
     @JvmStatic
     fun closeSilently(closeable: Closeable?) {
-        try {
+        runCatching { closeable?.close() }
-            closeable?.close()
-        } catch (ignored: IOException) {
-            /* Ignored. */
-        }
     }
 }

app/src/main/java/org/autojs/autojs/runtime/ScriptRuntime.kt

@@ -44,6 +44,7 @@ import org.autojs.autojs.runtime.api.augment.colors.Color
 import org.autojs.autojs.runtime.api.augment.colors.Colors
 import org.autojs.autojs.runtime.api.augment.console.Console
 import org.autojs.autojs.runtime.api.augment.continuation.Continuation
+import org.autojs.autojs.runtime.api.augment.converter.Converter
 import org.autojs.autojs.runtime.api.augment.cryptyo.Crypto
 import org.autojs.autojs.runtime.api.augment.device.Device
 import org.autojs.autojs.runtime.api.augment.dialogs.Dialogs
@@ -52,6 +53,7 @@ import org.autojs.autojs.runtime.api.augment.events.Events
 import org.autojs.autojs.runtime.api.augment.events.Keys
 import org.autojs.autojs.runtime.api.augment.files.Files
 import org.autojs.autojs.runtime.api.augment.floaty.Floaty
+import org.autojs.autojs.runtime.api.augment.formatter.Formatter
 import org.autojs.autojs.runtime.api.augment.global.Global
 import org.autojs.autojs.runtime.api.augment.global.GlobalClasses
 import org.autojs.autojs.runtime.api.augment.global.IsNullish
@@ -160,6 +162,8 @@ import org.autojs.autojs.runtime.api.Toaster as ApiToaster
 import org.autojs.autojs.runtime.api.UI as ApiUI
 import org.autojs.autojs.runtime.api.Util as ApiUtil
 import org.autojs.autojs.runtime.api.augment.autojs.Version as AutojsVersion
+import org.autojs.autojs.runtime.api.augment.converter.Bytes as BytesCvt
+import org.autojs.autojs.runtime.api.augment.formatter.Bytes as BytesFmt
 import org.autojs.autojs.runtime.api.augment.global.Legacy as GlobalLegacy
 import org.autojs.autojs.runtime.api.augment.notice.Channel as NoticeChannel
 import org.autojs.autojs.runtime.api.augment.util.Inspect as UtilInspect
@@ -714,20 +718,20 @@ class ScriptRuntime private constructor(builder: Builder) {
 
     private fun augment(target: ScriptableObject) {
 
-        Global(this).assignWithGlobal(target, topLevelScope, GlobalClasses)
+        Global(this).assignWithRuntime(target, this, GlobalClasses)
-        GlobalLegacy(this).assignWithGlobal(target, topLevelScope)
+        GlobalLegacy(this).assignWithRuntime(target, this)
-        IsNullish.augmentWithGlobal(target, topLevelScope, false)
+        IsNullish.augmentWithRuntime(target, this, false)
-        Util.augmentWithGlobal(target, topLevelScope, util, true).apply {
+        Util.augmentWithRuntime(target, this, util, true).also { util ->
-            UtilJava.augmentWithGlobal(this, topLevelScope, false)
+            UtilJava.augmentWithRuntime(util, this, false)
-            UtilVersion.augmentWithGlobal(this, topLevelScope, false)
+            UtilVersion.augmentWithRuntime(util, this, false)
-            UtilVersionCodes.augmentWithGlobal(this, topLevelScope, VersionCodesInfo.obj, false)
+            UtilVersionCodes.augmentWithRuntime(util, this, VersionCodesInfo.obj, false)
-            UtilInspect.augmentWithGlobal(this, topLevelScope, false)
+            UtilInspect.augmentWithRuntime(util, this, false)
-            UtilMorseCode.augmentWithGlobal(this, topLevelScope, false)
+            UtilMorseCode.augmentWithRuntime(util, this, false)
         }
-        Species.augmentWithGlobal(target, topLevelScope, true)
+        Species.augmentWithRuntime(target, this, true)
         App(this).augment(target, app, true).also { augmentedApp = it }
-        Autojs(this).augment(target, true).also { augmentedAutojs = it }.apply {
+        Autojs(this).augment(target, true).also { augmentedAutojs = it }.also { autojs ->
-            AutojsVersion.augmentWithGlobal(this, topLevelScope, false)
+            AutojsVersion.augmentWithRuntime(autojs, this, false)
         }
         Shell(this).augment(target, true)
         Timers(this).augment(target, timers, true)
@@ -735,26 +739,32 @@ class ScriptRuntime private constructor(builder: Builder) {
         Automator(this).augment(target, true)
         Selector(this).augment(target, true, READONLY)
         Events(this).augment(target, events, true)
-        Keys.augmentWithGlobal(target, topLevelScope, true)
+        Keys.augmentWithRuntime(target, this, true)
         Images(this).augment(target, true)
-        Ocr(this).augment(target, true).apply {
+        Ocr(this).augment(target, true).also { ocr ->
-            OcrMLKit(this@ScriptRuntime).augment(this, false).also { augmentedOcrMLKit = it }
+            OcrMLKit(this).augment(ocr, false).also { augmentedOcrMLKit = it }
-            OcrPaddle(this@ScriptRuntime).augment(this, false).also { augmentedOcrPaddle = it }
+            OcrPaddle(this).augment(ocr, false).also { augmentedOcrPaddle = it }
-            OcrRapid(this@ScriptRuntime).augment(this, false).also { augmentedOcrRapid = it }
+            OcrRapid(this).augment(ocr, false).also { augmentedOcrRapid = it }
         }
         Barcode(this).augment(target, true)
         QrCode(this).augment(target, true)
         Threads(this).augment(target, threads, true)
         UI(this).proxying(target, ui, true)
-        Colors.augmentWithGlobal(target, topLevelScope, listOf(colors, Colors), true)
+        Colors.augmentWithRuntime(target, this, listOf(colors, Colors), true)
-        Color.augmentWithGlobal(target, topLevelScope, false)
+        Color.augmentWithRuntime(target, this, false)
         Tasks(this).augment(target, true)
         Dialogs(this).augment(target, true)
         Continuation(this).augment(target, js_mod_continuation, true, READONLY)
         Http(this).augment(target, http, true)
         Web(this).augment(target, true)
         WebSocket(this).augment(target, WebSocketFields, false)
-        S13n.augmentWithGlobal(target, topLevelScope, true)
+        S13n.augmentWithRuntime(target, this, true)
+        Converter.augmentWithRuntime(target, this, true).also { cvt ->
+            BytesCvt.augmentWithRuntime(cvt, this, false)
+        }
+        Formatter.augmentWithRuntime(target, this, true).also { fmt ->
+            BytesFmt.augmentWithRuntime(fmt, this, false)
+        }
         Console(this).proxying(target, console, true).also { consoleProxyObject = it }
         Plugins(this).augment(target, true)
         Arrayx(this).augment(target, false)
@@ -762,29 +772,29 @@ class ScriptRuntime private constructor(builder: Builder) {
         Mathx(this).augment(target, false)
         Jsox(this).augment(target, true)
         Files(this).augment(target, files, true)
-        Crypto.augmentWithGlobal(target, topLevelScope, CoreCrypto, true)
+        Crypto.augmentWithRuntime(target, this, CoreCrypto, true)
         RootAutomator(this).augment(target, false)
         Engines(this).augment(target, true)
         Floaty(this).augment(target, true)
-        Storages.augmentWithGlobal(target, topLevelScope, true)
+        Storages.augmentWithRuntime(target, this, true)
         Device(this).augment(target, device, true)
         Recorder(this).augment(target, recorder, true)
         Toast(this).augment(target, true)
-        Media.augmentWithGlobal(target, topLevelScope, media, true)
+        Media.augmentWithRuntime(target, this, media, true)
-        Sensors.augmentWithGlobal(target, topLevelScope, sensors, true)
+        Sensors.augmentWithRuntime(target, this, sensors, true)
-        Base64.augmentWithGlobal(target, topLevelScope, true)
+        Base64.augmentWithRuntime(target, this, true)
-        Notice(this).augment(target, true).apply {
+        Notice(this).augment(target, true).also { notice ->
-            NoticeChannel(this@ScriptRuntime).augment(this, false)
+            NoticeChannel(this).augment(notice, false)
         }
         Shizuku(this).augment(target, shizuku, true)
-        OpenCC.augmentWithGlobal(target, topLevelScope, true)
+        OpenCC.augmentWithRuntime(target, this, true)
         Mime(this).augment(target, mime, true)
         SysProps(this).augment(target, true)
         SQLite(this).augment(target, true)
         Zip(this).augment(target, true)
-        NanoID.augmentWithGlobal(target, topLevelScope, true)
+        NanoID.augmentWithRuntime(target, this, true)
-        Pinyin.augmentWithGlobal(target, topLevelScope, true)
+        Pinyin.augmentWithRuntime(target, this, true)
-        Pinyin4j.augmentWithGlobal(target, topLevelScope, true)
+        Pinyin4j.augmentWithRuntime(target, this, true)
         Mediainfo(this).augment(target, true)
 
         augmentedApp.defineProp(Autojs::class.java.simpleName.lowercase(), augmentedAutojs)

app/src/main/java/org/autojs/autojs/runtime/api/Files.kt

@@ -192,8 +192,9 @@ class Files(private val scriptRuntime: ScriptRuntime) {
         return PFiles.isEmptyDir(path(path))
     }
 
-    fun getHumanReadableSize(bytes: Long): String {
+    @JvmOverloads
-        return PFiles.getHumanReadableSize(bytes)
+    fun getHumanReadableSize(bytes: Long, useIecIdentifier: Boolean = false): String {
+        return PFiles.getHumanReadableSize(bytes, useIecIdentifier)
     }
 
     fun getSimplifiedPath(path: String?): String {

app/src/main/java/org/autojs/autojs/runtime/api/augment/Augmentable.kt

@@ -138,19 +138,19 @@ abstract class Augmentable(private val scriptRuntime: ScriptRuntime? = null) : F
 
     fun originateKeyName() = also { mIsOriginalKeyName = true }
 
-    fun augmentWithGlobal(target: Scriptable, specifiedGlobal: ScriptableObject, withDollarPrefix: Boolean = true, additionalAttributes: Int = 0): ScriptableObject {
+    fun augmentWithRuntime(target: Scriptable, specifiedRuntime: ScriptRuntime, withDollarPrefix: Boolean = true, additionalAttributes: Int = 0): ScriptableObject {
-        return augment(target, withDollarPrefix, additionalAttributes, specifiedGlobal)
+        return augment(target, withDollarPrefix, additionalAttributes, specifiedRuntime)
     }
 
-    fun augmentWithGlobal(target: Scriptable, specifiedGlobal: ScriptableObject, proto: Any, withDollarPrefix: Boolean = true, additionalAttributes: Int = 0): ScriptableObject {
+    fun augmentWithRuntime(target: Scriptable, specifiedRuntime: ScriptRuntime, proto: Any, withDollarPrefix: Boolean = true, additionalAttributes: Int = 0): ScriptableObject {
-        return augment(target, proto, withDollarPrefix, additionalAttributes, specifiedGlobal)
+        return augment(target, proto, withDollarPrefix, additionalAttributes, specifiedRuntime)
     }
 
-    fun augment(target: Scriptable, withDollarPrefix: Boolean = true, additionalAttributes: Int = 0, specifiedGlobal: ScriptableObject? = null): ScriptableObject {
+    fun augment(target: Scriptable, withDollarPrefix: Boolean = true, additionalAttributes: Int = 0, specifiedRuntime: ScriptRuntime? = null): ScriptableObject {
-        return augment(target, emptyList<Any>(), withDollarPrefix, additionalAttributes, specifiedGlobal)
+        return augment(target, emptyList<Any>(), withDollarPrefix, additionalAttributes, specifiedRuntime)
     }
 
-    fun augment(target: Scriptable, proto: Any, withDollarPrefix: Boolean = true, additionalAttributes: Int = 0, specifiedGlobal: ScriptableObject? = null): ScriptableObject {
+    fun augment(target: Scriptable, proto: Any, withDollarPrefix: Boolean = true, additionalAttributes: Int = 0, specifiedRuntime: ScriptRuntime? = null): ScriptableObject {
         val callFunc: (args: Array<out Any?>) -> Any? = { args ->
             try {
                 (this as Invokable).invoke(*args)
@@ -191,7 +191,7 @@ abstract class Augmentable(private val scriptRuntime: ScriptRuntime? = null) : F
             else -> RhinoUtils.newObject(target)
         }
 
-        assign(newObj, proto, specifiedGlobal)
+        assign(newObj, proto, specifiedRuntime)
 
         val keys = mutableListOf(key)
         if (withDollarPrefix) keys += "\$$key"
@@ -203,17 +203,17 @@ abstract class Augmentable(private val scriptRuntime: ScriptRuntime? = null) : F
         return newObj
     }
 
-    fun assignWithGlobal(target: ScriptableObject, specifiedGlobal: ScriptableObject, proto: Any? = null) {
+    fun assignWithRuntime(target: ScriptableObject, specifiedRuntime: ScriptRuntime, proto: Any? = null) {
-        assign(target, proto, specifiedGlobal)
+        assign(target, proto, specifiedRuntime)
     }
 
     /**
      * When the subclass calls assign, the value of key will be ignored.
      * zh-CN: 子类调用 assign 时将忽略 key 的值.
      */
-    fun assign(target: ScriptableObject, proto: Any? = null, specifiedGlobal: ScriptableObject? = null) {
+    fun assign(target: ScriptableObject, proto: Any? = null, specifiedRuntime: ScriptRuntime? = null) {
 
-        val global: ScriptableObject = specifiedGlobal ?: scriptRuntime?.topLevelScope ?: ScriptableObject.getTopLevelScope(target) as ScriptableObject
+        val global: ScriptableObject = (specifiedRuntime ?: scriptRuntime)?.topLevelScope ?: ScriptableObject.getTopLevelScope(target) as ScriptableObject
 
         val protos = when (proto) {
             null -> emptyList()

app/src/main/java/org/autojs/autojs/runtime/api/augment/console/Console.kt

@@ -40,7 +40,13 @@ import org.autojs.autojs.util.RhinoUtils.withRhinoContext
 import org.autojs.autojs.util.StringUtils.lowercaseFirstChar
 import org.autojs.autojs.util.StringUtils.uppercaseFirstChar
 import org.autojs.autojs6.R
-import org.mozilla.javascript.*
+import org.mozilla.javascript.BaseFunction
+import org.mozilla.javascript.Context
+import org.mozilla.javascript.NativeArray
+import org.mozilla.javascript.NativeError
+import org.mozilla.javascript.NativeObject
+import org.mozilla.javascript.ScriptableObject
+import org.mozilla.javascript.Undefined
 
 @Suppress("unused", "UNUSED_PARAMETER")
 class Console(scriptRuntime: ScriptRuntime) : AugmentableProxy(scriptRuntime) {
@@ -226,38 +232,38 @@ class Console(scriptRuntime: ScriptRuntime) : AugmentableProxy(scriptRuntime) {
 
         @JvmStatic
         @RhinoRuntimeFunctionInterface
-        fun log(scriptRuntime: ScriptRuntime, args: Array<out Any?>) = unwrapArguments(args) {
+        fun log(scriptRuntime: ScriptRuntime, args: Array<out Any?>) {
-            scriptRuntime.console.log(Util.formatRhino(*it))
+            return scriptRuntime.console.log(Util.formatRhino(*args))
         }
 
         @JvmStatic
         @RhinoRuntimeFunctionInterface
-        fun verbose(scriptRuntime: ScriptRuntime, args: Array<out Any?>) = unwrapArguments(args) {
+        fun verbose(scriptRuntime: ScriptRuntime, args: Array<out Any?>) {
-            scriptRuntime.console.verbose(Util.formatRhino(*it))
+            return scriptRuntime.console.verbose(Util.formatRhino(*args))
         }
 
         @JvmStatic
         @RhinoRuntimeFunctionInterface
-        fun info(scriptRuntime: ScriptRuntime, args: Array<out Any?>) = unwrapArguments(args) {
+        fun info(scriptRuntime: ScriptRuntime, args: Array<out Any?>) {
-            scriptRuntime.console.info(Util.formatRhino(*it))
+            return scriptRuntime.console.info(Util.formatRhino(*args))
         }
 
         @JvmStatic
         @RhinoRuntimeFunctionInterface
-        fun warn(scriptRuntime: ScriptRuntime, args: Array<out Any?>) = unwrapArguments(args) {
+        fun warn(scriptRuntime: ScriptRuntime, args: Array<out Any?>) {
-            scriptRuntime.console.warn(Util.formatRhino(*it))
+            return scriptRuntime.console.warn(Util.formatRhino(*args))
         }
 
         @JvmStatic
         @RhinoRuntimeFunctionInterface
-        fun error(scriptRuntime: ScriptRuntime, args: Array<out Any?>) = unwrapArguments(args) {
+        fun error(scriptRuntime: ScriptRuntime, args: Array<out Any?>) {
-            scriptRuntime.console.error(Util.formatRhino(*it))
+            return scriptRuntime.console.error(Util.formatRhino(*args))
         }
 
         @JvmStatic
         @RhinoRuntimeFunctionInterface
-        fun print(scriptRuntime: ScriptRuntime, args: Array<out Any?>) = unwrapArguments(args) {
+        fun print(scriptRuntime: ScriptRuntime, args: Array<out Any?>) {
-            scriptRuntime.console.print(Log.DEBUG, Util.formatRhino(*it))
+            return scriptRuntime.console.print(Log.DEBUG, Util.formatRhino(*args))
         }
 
         @JvmStatic

app/src/main/java/org/autojs/autojs/runtime/api/augment/converter/Bytes.kt

@@ -0,0 +1,215 @@
+@file:Suppress("MayBeConstant")
+
+package org.autojs.autojs.runtime.api.augment.converter
+
+import org.autojs.autojs.annotation.RhinoSingletonFunctionInterface
+import org.autojs.autojs.extension.AnyExtensions.isJsBoolean
+import org.autojs.autojs.extension.AnyExtensions.isJsNullish
+import org.autojs.autojs.extension.AnyExtensions.isJsNumber
+import org.autojs.autojs.extension.AnyExtensions.isJsObject
+import org.autojs.autojs.extension.AnyExtensions.isJsString
+import org.autojs.autojs.extension.AnyExtensions.jsBrief
+import org.autojs.autojs.extension.ScriptableObjectExtensions.inquire
+import org.autojs.autojs.runtime.api.augment.Augmentable
+import org.autojs.autojs.runtime.api.augment.Invokable
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.AUTO
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.DEFAULT_BYTES_STRICT
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.IEC_DIV
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.SI_DIV
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.Tough
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.Tough.LOOSE
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.Tough.NONE
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.Tough.STRICT
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.UNITS
+import org.autojs.autojs.util.RhinoUtils.coerceBoolean
+import org.mozilla.javascript.ScriptableObject
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes as CoreBytes
+
+object Bytes : Augmentable(), Invokable {
+
+    override val selfAssignmentProperties = listOf(
+        "UNITS" to UNITS,
+        "AUTO" to AUTO,
+        "IEC_DIV" to IEC_DIV,
+        "SI_DIV" to SI_DIV,
+    )
+
+    override val selfAssignmentFunctions = listOf(
+        ::strict.name,
+        ::loose.name,
+    )
+
+    override fun invoke(vararg args: Any?): Any = ensureArgumentsLengthInRange(args, 1..4) { call(args) }
+
+    @JvmStatic
+    @RhinoSingletonFunctionInterface
+    fun call(args: Array<out Any?>, tough: Tough = NONE): Any = ensureArgumentsLengthInRange(args, 1..4) { argList ->
+        val (arg0, arg1, arg2, arg3) = argList
+
+        when (argList.size) {
+            4 -> when {
+                arg3.isJsObject() -> {
+                    val opts = arg3 as ScriptableObject
+                    listOf("source", "fromUnit", "toUnit", "options").forBytesNumber(
+                        source = arg0,
+                        fromUnit = opts.inquire("fromUnit", arg1),
+                        toUnit = opts.inquire("toUnit", arg2),
+                        fractionDigits = opts.inquire("fractionDigits"),
+                        autoCarryThreshold = opts.inquire("autoCarryThreshold"),
+                        strict = opts.inquire("strict"),
+                        tough = tough,
+                    )
+                }
+                arg3.isJsBoolean() -> {
+                    listOf("source", "fromUnit", "toUnit", "useIecIdentifier").forBytesNumber(
+                        source = arg0,
+                        fromUnit = arg1,
+                        toUnit = arg2,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg3.isJsNumber() -> {
+                    listOf("source", "fromUnit", "toUnit", "fractionDigits").forBytesNumber(
+                        source = arg0,
+                        fromUnit = arg1,
+                        toUnit = arg2,
+                        fractionDigits = arg3,
+                        strict = tough == STRICT,
+                    )
+                }
+                else -> throw IllegalArgumentException("Invalid argument[3] ${arg3.jsBrief()} for ${Converter.key}.bytes")
+            }
+            3 -> when {
+                arg2.isJsObject() -> {
+                    val opts = arg2 as ScriptableObject
+                    listOf("source", "toUnit", "options").forBytesNumber(
+                        source = arg0,
+                        fromUnit = opts.inquire("fromUnit"),
+                        toUnit = opts.inquire("toUnit", arg1),
+                        fractionDigits = opts.inquire("fractionDigits"),
+                        autoCarryThreshold = opts.inquire("autoCarryThreshold"),
+                        strict = opts.inquire("strict"),
+                        tough = tough,
+                    )
+                }
+                arg2.isJsString() -> {
+                    listOf("source", "fromUnit", "toUnit").forBytesNumber(
+                        source = arg0,
+                        fromUnit = arg1,
+                        toUnit = arg2,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg2.isJsBoolean() -> {
+                    listOf("source", "toUnit", "useIecIdentifier").forBytesNumber(
+                        source = arg0,
+                        toUnit = arg1,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg2.isJsNumber() -> {
+                    listOf("source", "toUnit", "fractionDigits").forBytesNumber(
+                        source = arg0,
+                        toUnit = arg1,
+                        fractionDigits = arg2,
+                        strict = tough == STRICT,
+                    )
+                }
+                else -> throw IllegalArgumentException("Invalid argument[2] ${arg2.jsBrief()} for ${Converter.key}.bytes")
+            }
+            2 -> when {
+                arg1.isJsObject() -> {
+                    val opts = arg1 as ScriptableObject
+                    listOf("source", "options").forBytesNumber(
+                        source = arg0,
+                        fromUnit = opts.inquire("fromUnit"),
+                        toUnit = opts.inquire("toUnit"),
+                        fractionDigits = opts.inquire("fractionDigits"),
+                        autoCarryThreshold = opts.inquire("autoCarryThreshold"),
+                        strict = opts.inquire("strict"),
+                        tough = tough,
+                    )
+                }
+                arg1.isJsString() -> {
+                    listOf("source", "toUnit").forBytesNumber(
+                        source = arg0,
+                        toUnit = arg1,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg1.isJsBoolean() -> {
+                    listOf("source", "useIecIdentifier").forBytesNumber(
+                        source = arg0,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg1.isJsNumber() -> {
+                    listOf("source", "fractionDigits").forBytesNumber(
+                        source = arg0,
+                        fractionDigits = arg1,
+                        strict = tough == STRICT,
+                    )
+                }
+                else -> throw IllegalArgumentException("Invalid argument[1] ${arg1.jsBrief()} for ${Converter.key}.bytes")
+            }
+            1 -> listOf("source").forBytesNumber(
+                source = arg0,
+                strict = tough == STRICT,
+            )
+            else -> throw IllegalArgumentException("Invalid arguments length ${argList.size} for ${Converter.key}.bytes")
+        }
+    }
+
+    @JvmStatic
+    @RhinoSingletonFunctionInterface
+    fun strict(args: Array<out Any?>): Any = ensureArgumentsLengthInRange(args, 1..4) {
+        call(args, STRICT)
+    }
+
+    @JvmStatic
+    @RhinoSingletonFunctionInterface
+    fun loose(args: Array<out Any?>): Any = ensureArgumentsLengthInRange(args, 1..4) {
+        call(args, LOOSE)
+    }
+
+    private fun List<String>.forBytesNumber(
+        source: Any? = null,
+        fromUnit: Any? = null,
+        toUnit: Any? = null,
+        fractionDigits: Any? = null,
+        autoCarryThreshold: Any? = null,
+        strict: Any? = null,
+        tough: Tough = NONE,
+    ): Any {
+        val (niceStrict, signature) = when (tough) {
+            STRICT -> {
+                val signature = "${Converter.key}.bytes.strict(${this.joinToString(", ")})"
+                require(strict.isJsNullish()) {
+                    "Option \"strict\" ${strict.jsBrief()} must be nullish when in strict mode for $signature"
+                }
+                true to signature
+            }
+            LOOSE -> {
+                val signature = "${Converter.key}.bytes.loose(${this.joinToString(", ")})"
+                require(strict.isJsNullish()) {
+                    "Option \"strict\" ${strict.jsBrief()} must be nullish when in loose mode for $signature"
+                }
+                false to signature
+            }
+            NONE -> {
+                val signature = "${Converter.key}.bytes(${this.joinToString(", ")})"
+                coerceBoolean(strict, DEFAULT_BYTES_STRICT) to signature
+            }
+        }
+        return CoreBytes.numberRhino(
+            source,
+            fromUnit,
+            toUnit,
+            fractionDigits,
+            autoCarryThreshold,
+            niceStrict,
+            signature,
+        )
+    }
+
+}

app/src/main/java/org/autojs/autojs/runtime/api/augment/converter/Converter.kt

@@ -0,0 +1,9 @@
+package org.autojs.autojs.runtime.api.augment.converter
+
+import org.autojs.autojs.runtime.api.augment.Augmentable
+
+object Converter : Augmentable() {
+
+    override val key = "cvt"
+
+}

app/src/main/java/org/autojs/autojs/runtime/api/augment/converter/core/Bytes.kt

@@ -0,0 +1,455 @@
+@file:Suppress("MayBeConstant")
+
+package org.autojs.autojs.runtime.api.augment.converter.core
+
+import org.autojs.autojs.extension.AnyExtensions.isJsNullish
+import org.autojs.autojs.extension.AnyExtensions.isJsNumber
+import org.autojs.autojs.extension.AnyExtensions.jsBrief
+import org.autojs.autojs.util.RhinoUtils.MAX_SAFE_INT_IEEE754_BD
+import org.autojs.autojs.util.RhinoUtils.MIN_SAFE_INT_IEEE754_BD
+import org.autojs.autojs.util.RhinoUtils.coerceBoolean
+import org.autojs.autojs.util.RhinoUtils.coerceIntNumber
+import org.autojs.autojs.util.RhinoUtils.coerceLongNumber
+import org.autojs.autojs.util.RhinoUtils.coerceNumber
+import org.autojs.autojs.util.RhinoUtils.coerceString
+import org.mozilla.javascript.Context
+import java.math.BigDecimal
+import java.math.BigInteger
+import java.math.RoundingMode
+import kotlin.Double.Companion.NaN
+import kotlin.text.RegexOption.IGNORE_CASE
+
+object Bytes {
+
+    // @formatter:off
+    /**
+     * ```md
+     * |  Value  | IEC |        Term        |
+     * |---------|-----|--------------------|
+     * | 1024^1  | KiB | Kibibyte (Kilo)    |
+     * | 1024^2  | MiB | Mebibyte (Mega)    |
+     * | 1024^3  | GiB | Gibibyte (Giga)    |
+     * | 1024^4  | TiB | Tebibyte (Tera)    |
+     * | 1024^5  | PiB | Pebibyte (Peta)    |
+     * | 1024^6  | EiB | Exbibyte (Exa)     |
+     * | 1024^7  | ZiB | Zebibyte (Zetta)   |
+     * | 1024^8  | YiB | Yobibyte (Yotta)   |
+     * | 1024^9  | RiB | Robibyte (Ronna)   |
+     * | 1024^10 | QiB | Quebibyte (Quetta) |
+     * ```
+     */
+    @Suppress("SpellCheckingInspection")
+    @JvmField val UNITS = "KMGTPEZYRQ"
+    @JvmField val AUTO = "AUTO"
+
+    @JvmField val IEC_DIV = 1024L
+    @JvmField val SI_DIV = 1000L
+
+    @JvmField val DEFAULT_BYTES_FROM_UNIT = "B"
+    @JvmField val DEFAULT_BYTES_TO_UNIT = AUTO
+    @JvmField val DEFAULT_BYTES_USE_IEC_IDENTIFIER = false
+    @JvmField val DEFAULT_BYTES_USE_IEC_IDENTIFIER_FOR_STRICT = true
+    @JvmField val DEFAULT_BYTES_USE_SPACE = true
+    @JvmField val DEFAULT_BYTES_FRACTION_DIGITS = 2
+    @JvmField val DEFAULT_BYTES_TRIM_TRAILING_ZERO = false
+    @JvmField val DEFAULT_BYTES_AUTO_CARRY_THRESHOLD = IEC_DIV
+    @JvmField val DEFAULT_BYTES_STRICT = false
+    // @formatter:on
+
+    private val BI_IEC = BigInteger.valueOf(IEC_DIV)
+    private val BI_SI = BigInteger.valueOf(SI_DIV)
+    private val POW_IEC = Array(UNITS.length + 1) { i -> BI_IEC.pow(i) }
+    private val POW_SI = Array(UNITS.length + 1) { i -> BI_SI.pow(i) }
+
+    @JvmStatic
+    fun numberRhino(
+        source: Any? = null, /* Double */
+        fromUnit: Any? = null, /* String */
+        toUnit: Any? = null, /* String */
+        fractionDigits: Any? = null, /* Int */
+        autoCarryThreshold: Any? = null, /* Double */
+        strict: Any? = null, /* Boolean */
+        signature: String? = null,
+    ): Any {
+        val r = NumberRetrievalHandler(source, fromUnit, toUnit, fractionDigits, autoCarryThreshold, strict, signature).retrieve()
+        return number(
+            r.niceSource, r.niceFromUnit, r.niceToUnit, r.niceFractionDigits, r.niceAutoCarryThreshold, r.niceStrict, signature ?: "bytes.number",
+        ).toJavaScriptBigIntOrNumber()
+    }
+
+    @JvmStatic
+    @JvmOverloads
+    fun number(
+        source: Double,
+        fromUnit: String = DEFAULT_BYTES_FROM_UNIT,
+        toUnit: String = DEFAULT_BYTES_TO_UNIT,
+        fractionDigits: Int = DEFAULT_BYTES_FRACTION_DIGITS,
+        autoCarryThreshold: Long = DEFAULT_BYTES_AUTO_CARRY_THRESHOLD,
+        strict: Boolean = DEFAULT_BYTES_STRICT,
+        signature: String = "Bytes.number",
+    ) = parseArguments(source, fromUnit, toUnit, fractionDigits, autoCarryThreshold, strict, signature).let { (bytesBD, baseBI, toUnit) ->
+        computeNumberValue(bytesBD, baseBI, toUnit, fractionDigits, autoCarryThreshold, strict, signature)
+    }
+
+    @JvmStatic
+    fun stringRhino(
+        source: Any? = null,
+        fromUnit: Any? = null,
+        toUnit: Any? = null,
+        useIecIdentifier: Any? = null,
+        useSpace: Any? = null,
+        fractionDigits: Any? = null,
+        trimTrailingZero: Any? = null,
+        autoCarryThreshold: Any? = null,
+        strict: Any? = null,
+        signature: String? = null,
+    ): String {
+        val r = StringRetrievalHandler(source, fromUnit, toUnit, useIecIdentifier, useSpace, fractionDigits, trimTrailingZero, autoCarryThreshold, strict, signature).retrieve()
+        return string(r.niceSource, r.niceFromUnit, r.niceToUnit, r.niceUseIecIdentifier, r.niceUseSpace, r.niceFractionDigits, r.niceTrimTrailingZero, r.niceAutoCarryThreshold, r.niceStrict, signature ?: "bytes.string")
+    }
+
+    @JvmStatic
+    @JvmOverloads
+    fun string(
+        source: Double,
+        fromUnit: String = DEFAULT_BYTES_FROM_UNIT,
+        toUnit: String = DEFAULT_BYTES_TO_UNIT,
+        useIecIdentifier: Boolean? = null,
+        useSpace: Boolean = DEFAULT_BYTES_USE_SPACE,
+        fractionDigits: Int = DEFAULT_BYTES_FRACTION_DIGITS,
+        trimTrailingZero: Boolean = DEFAULT_BYTES_TRIM_TRAILING_ZERO,
+        autoCarryThreshold: Long = DEFAULT_BYTES_AUTO_CARRY_THRESHOLD,
+        strict: Boolean = DEFAULT_BYTES_STRICT,
+        signature: String = "Bytes.string",
+    ): String {
+        val (bytesBD, baseBI, niceToUnit) = parseArguments(source, fromUnit, toUnit, fractionDigits, autoCarryThreshold, strict, signature)
+        val bd = computeNumberValue(bytesBD, baseBI, niceToUnit, fractionDigits, autoCarryThreshold, strict, signature)
+        val bdFormatted = bd.setScale(fractionDigits, RoundingMode.HALF_UP).toPlainString().let {
+            if (!trimTrailingZero) it else it.replace(Regex("(\\.\\d*?)0+$"), "$1").removeSuffix(".")
+        }
+        val withIec = useIecIdentifier ?: when {
+            strict -> DEFAULT_BYTES_USE_IEC_IDENTIFIER_FOR_STRICT
+            else -> DEFAULT_BYTES_USE_IEC_IDENTIFIER
+        }
+        val space = if (useSpace) " " else ""
+
+        return when {
+            strict -> when (niceToUnit) {
+                AUTO -> {
+                    val (_, core) = autoPickBig(bytesBD, baseBI, BigDecimal.valueOf(autoCarryThreshold))
+                    val suffix = if (core.isEmpty()) "B" else "${core}iB"
+                    "$bdFormatted$space$suffix"
+                }
+                else -> {
+                    val coreRaw = niceToUnit.uppercase().removeSuffix("B")
+                    val isIEC = coreRaw.endsWith("I")
+                    when (val core = if (isIEC) coreRaw.removeSuffix("I") else coreRaw) {
+                        "" -> "$bdFormatted${space}B"
+                        else -> {
+                            val idx = UNITS.indexOf(core)
+                            require(idx != -1) { "Argument \"toUnit\" ${toUnit.jsBrief()} is invalid${signature.toSignatureSuffix()}" }
+                            when {
+                                isIEC -> "$bdFormatted${space}${core}iB"
+                                else -> "$bdFormatted${space}${core}B"
+                            }
+                        }
+                    }
+                }
+            }
+            else -> when (niceToUnit) {
+                AUTO -> {
+                    val (_, core) = autoPickBig(bytesBD, BI_IEC, BigDecimal.valueOf(autoCarryThreshold))
+                    val suffix = if (core.isEmpty()) "B" else if (withIec) "${core}iB" else "${core}B"
+                    "$bdFormatted$space$suffix"
+                }
+                else -> when (val core = niceToUnit.removeSuffix("B")) {
+                    "" -> "$bdFormatted${space}B"
+                    else -> {
+                        val idx = UNITS.indexOf(core)
+                        require(idx != -1) { "Argument \"toUnit\" ${toUnit.jsBrief()} is invalid${signature.toSignatureSuffix()}" }
+                        val suffix = if (withIec) "${core}iB" else "${core}B"
+                        "$bdFormatted$space$suffix"
+                    }
+                }
+            }
+        }
+    }
+
+    private fun parseArguments(
+        source: Double,
+        fromUnit: String = DEFAULT_BYTES_FROM_UNIT,
+        toUnit: String = DEFAULT_BYTES_TO_UNIT,
+        fractionDigits: Int = DEFAULT_BYTES_FRACTION_DIGITS,
+        autoCarryThreshold: Long = DEFAULT_BYTES_AUTO_CARRY_THRESHOLD,
+        strict: Boolean = DEFAULT_BYTES_STRICT,
+        signature: String,
+    ): UnitConversionDetails {
+        val signatureSuffix = signature.toSignatureSuffix()
+
+        require(!source.isNaN() && source >= 0.0) {
+            "Argument \"source\" ${source.jsBrief()} must be non-negative number$signatureSuffix"
+        }
+
+        require(fractionDigits >= 0) {
+            "Argument \"fractionDigits\" ${fractionDigits.jsBrief()} must be non-negative$signatureSuffix"
+        }
+
+        val niceToUnit = when {
+            strict -> toUnit.trim().uppercase()
+            else -> toUnit.toSiUnit()
+        }.takeUnless { it.isBlank() } ?: DEFAULT_BYTES_TO_UNIT
+
+        require(autoCarryThreshold > 0) {
+            "Argument \"autoCarryThreshold\" ${autoCarryThreshold.jsBrief()} must be a positive finite number$signatureSuffix"
+        }
+        require(autoCarryThreshold == DEFAULT_BYTES_AUTO_CARRY_THRESHOLD || niceToUnit.equals(AUTO, ignoreCase = true)) {
+            "Argument \"autoCarryThreshold\" is only allowed when argument \"toUnit\" is \"$AUTO\"$signatureSuffix"
+        }
+
+        val (bytesBD, baseBI) = run parseExactBytes@{
+            val valueBD = BigDecimal.valueOf(source)
+            val niceFromUnit = when {
+                strict -> fromUnit.trim()
+                else -> fromUnit.toSiUnit()
+            }.takeUnless { it.isBlank() }?.uppercase() ?: DEFAULT_BYTES_FROM_UNIT
+            val coreRaw = when {
+                niceFromUnit.endsWith("B") -> niceFromUnit.dropLast(1)
+                else -> niceFromUnit
+            }
+            val isIec = strict && coreRaw.endsWith("I")
+            val core = if (isIec) coreRaw.removeSuffix("I") else coreRaw
+            val base = if (!strict) BI_IEC else if (isIec) BI_IEC else BI_SI
+            val idx = if (core.isEmpty()) -1 else UNITS.indexOf(core)
+            require(core.isEmpty() || idx != -1) { "Argument \"fromUnit\" ${fromUnit.jsBrief()} is invalid$signatureSuffix" }
+            val factor = if (idx == -1) BigInteger.ONE else powBI(base, idx + 1)
+            valueBD.multiply(BigDecimal(factor)) to base
+        }
+
+        return UnitConversionDetails(bytesBD, baseBI, niceToUnit)
+    }
+
+    // Calculate the order of AUTO (avoiding errors from ln/Double), determine whether to carry early (autoCarryThreshold)
+    // zh-CN: 求 AUTO 的阶 (避免 ln/Double 带来的误差), 决策是否提前进位 (autoCarryThreshold).
+    private fun autoPickBig(bytes: BigDecimal, base: BigInteger, carryThreshold: BigDecimal): Pair<Int, String> {
+        if (bytes.compareTo(BigDecimal.ZERO) == 0) return 0 to ""
+        var exp = 0
+        val core = fun() = UNITS.substring((exp - 1).coerceAtLeast(0), exp)
+        // Find max exp such that bytes >= base^exp.
+        // zh-CN: 找到最大的 exp 使 bytes >= base^exp.
+        for (i in 1..UNITS.length) {
+            val th = BigDecimal(powBI(base, i))
+            if (bytes >= th) exp = i else break
+        }
+        if (exp > 0) {
+            val currentVal = bytes.divide(BigDecimal(powBI(base, exp)), DEFAULT_BYTES_FRACTION_DIGITS + 4, RoundingMode.HALF_UP)
+            if (currentVal >= carryThreshold && exp < UNITS.length) {
+                exp += 1
+                return exp to core()
+            }
+        }
+        return exp to core()
+    }
+
+    private fun parseSource(source: Any?, fromUnit: Any?, strict: Boolean, signatureSuffix: String): Pair<Double, String> {
+        var bytes: Double
+        var parsedUnitRaw = ""
+        when {
+            source.isJsNumber() -> {
+                val d = coerceNumber(source, NaN)
+                require(!d.isNaN() && d >= 0.0) { "Argument \"source\" ${source.jsBrief()} must be non-negative number for $signatureSuffix" }
+                bytes = d
+            }
+            else -> {
+                val s = coerceString(source, "0").trim()
+                val m = Regex("^(\\d+(?:\\.\\d+)?)\\s*([A-Za-z]*)$", IGNORE_CASE).find(s)
+                    ?: throw IllegalArgumentException("Invalid bytes value: \"$source\"")
+                bytes = try {
+                    Context.toNumber(m.groupValues[1])
+                } catch (_: Throwable) {
+                    throw IllegalArgumentException("Invalid bytes value: \"${m.groupValues[1]}\"")
+                }
+                parsedUnitRaw = m.groupValues[2]
+            }
+        }
+        val niceFromUnit = run parseFromUnit@{
+            val incoming = coerceString(fromUnit, "").let { if (strict) it.trim() else it.toSiUnit() }
+            val parsed = if (strict) parsedUnitRaw.trim() else parsedUnitRaw.toSiUnit()
+            when {
+                incoming.isBlank() -> parsed
+                parsed.isBlank() -> incoming
+                incoming.equals(parsed, ignoreCase = !strict) -> incoming
+                else -> throw IllegalArgumentException("Ambiguous \"fromUnit\" values: [ $incoming, $parsed ]$signatureSuffix")
+            }.ifBlank { DEFAULT_BYTES_FROM_UNIT }.uppercase()
+        }
+        return bytes to niceFromUnit
+    }
+
+    private fun powBI(base: BigInteger, exp: Int): BigInteger = when {
+        base == BI_IEC && exp in 0..UNITS.length -> POW_IEC[exp]
+        base == BI_SI && exp in 0..UNITS.length -> POW_SI[exp]
+        else -> base.pow(exp)
+    }
+
+    private fun computeNumberValue(
+        bytesBD: BigDecimal,
+        baseBI: BigInteger,
+        toUnit: String,
+        fractionDigits: Int,
+        autoCarryThreshold: Long,
+        strict: Boolean,
+        signature: String,
+    ): BigDecimal = when {
+        strict -> when (toUnit) {
+            AUTO -> {
+                val (exp, _) = autoPickBig(bytesBD, baseBI, BigDecimal.valueOf(autoCarryThreshold))
+                val value = if (exp == 0) bytesBD else bytesBD.divide(BigDecimal(powBI(baseBI, exp)), fractionDigits, RoundingMode.HALF_UP)
+                value.stripTrailingZeros()
+            }
+            else -> {
+                val coreRaw = toUnit.uppercase().removeSuffix("B")
+                val isIEC = coreRaw.endsWith("I")
+                when (val core = if (isIEC) coreRaw.removeSuffix("I") else coreRaw) {
+                    "" -> bytesBD.stripTrailingZeros()
+                    else -> {
+                        val idx = UNITS.indexOf(core)
+                        require(idx != -1) { "Argument \"toUnit\" ${toUnit.jsBrief()} is invalid${signature.toSignatureSuffix()}" }
+                        val base = if (isIEC) BI_IEC else BI_SI
+                        val value = bytesBD.divide(BigDecimal(powBI(base, idx + 1)), fractionDigits, RoundingMode.HALF_UP)
+                        value.stripTrailingZeros()
+                    }
+                }
+            }
+        }
+        else -> when (toUnit) {
+            AUTO -> {
+                val (exp, _) = autoPickBig(bytesBD, BI_IEC, BigDecimal.valueOf(autoCarryThreshold))
+                val value = if (exp == 0) bytesBD else bytesBD.divide(BigDecimal(powBI(BI_IEC, exp)), fractionDigits, RoundingMode.HALF_UP)
+                value.stripTrailingZeros()
+            }
+            else -> when (val core = toUnit.removeSuffix("B")) {
+                "" -> bytesBD
+                else -> {
+                    val idx = UNITS.indexOf(core)
+                    require(idx != -1) { "Argument \"toUnit\" ${toUnit.jsBrief()} is invalid${signature.toSignatureSuffix()}" }
+                    val value = bytesBD.divide(BigDecimal(powBI(BI_IEC, idx + 1)), fractionDigits, RoundingMode.HALF_UP)
+                    value.stripTrailingZeros()
+                }
+            }
+        }
+    }
+
+    private fun String.toSiUnit() = this.trim().uppercase().replace(Regex("I(?=B$)"), "")
+
+    private fun String.toSignatureSuffix() = this.takeUnless { it.isBlank() }?.let { " for $it" } ?: ""
+
+    private fun BigDecimal.toJavaScriptBigIntOrNumber(): Any = when (this) {
+        in MIN_SAFE_INT_IEEE754_BD..MAX_SAFE_INT_IEEE754_BD -> {
+            this.toDouble()
+        }
+        else -> this
+    }
+
+    private interface RetrievalHandler {
+        fun retrieve(): Any
+    }
+
+    private open class NumberRetrievalHandler(
+        private val source: Any? = null, /* Double */
+        private val fromUnit: Any? = null, /* String */
+        private val toUnit: Any? = null, /* String */
+        private val fractionDigits: Any? = null, /* Int */
+        private val autoCarryThreshold: Any? = null, /* Double */
+        private val strict: Any? = null, /* Boolean */
+        private val signature: String? = null,
+    ) : RetrievalHandler {
+
+        override fun retrieve(): NumberRhinoStandardizationDetails {
+            val signatureSuffix = signature?.toSignatureSuffix() ?: ""
+            val niceStrict = coerceBoolean(strict, DEFAULT_BYTES_STRICT)
+            val niceToUnit = when {
+                niceStrict -> coerceString(toUnit, DEFAULT_BYTES_TO_UNIT).trim().uppercase()
+                else -> coerceString(toUnit, DEFAULT_BYTES_TO_UNIT).toSiUnit()
+            }.takeIf { it.isNotEmpty() } ?: DEFAULT_BYTES_TO_UNIT
+
+            val (niceSource, niceFromUnit) = parseSource(source, fromUnit, niceStrict, signatureSuffix)
+
+            val niceFractionDigits = coerceIntNumber(fractionDigits, DEFAULT_BYTES_FRACTION_DIGITS).also {
+                require(it >= 0) { "Argument \"fractionDigits\" ${fractionDigits.jsBrief()} must be non-negative$signatureSuffix" }
+            }
+
+            require(autoCarryThreshold.isJsNullish() || niceToUnit.equals(AUTO, ignoreCase = true)) {
+                "Option \"autoCarryThreshold\" is only allowed when argument \"toUnit\" is \"$AUTO\"$signatureSuffix"
+            }
+            val niceAutoCarryThreshold = coerceLongNumber(autoCarryThreshold, DEFAULT_BYTES_AUTO_CARRY_THRESHOLD).also {
+                require(it > 0) {
+                    "Option \"autoCarryThreshold\" ${autoCarryThreshold.jsBrief()} must be a positive finite number$signatureSuffix"
+                }
+            }
+            return NumberRhinoStandardizationDetails(niceSource, niceFromUnit, niceToUnit, niceFractionDigits, niceAutoCarryThreshold, niceStrict)
+        }
+
+    }
+
+    private class StringRetrievalHandler(
+        source: Any?,
+        fromUnit: Any?,
+        toUnit: Any?,
+        private val useIecIdentifier: Any?,
+        private val useSpace: Any?,
+        fractionDigits: Any?,
+        private val trimTrailingZero: Any?,
+        autoCarryThreshold: Any?,
+        strict: Any?,
+        private val signature: String? = null,
+    ) : NumberRetrievalHandler(source, fromUnit, toUnit, fractionDigits, autoCarryThreshold, strict, signature) {
+
+        override fun retrieve(): StringRhinoStandardizationDetails {
+            val sp = super.retrieve()
+
+            val niceSource = sp.niceSource
+            val niceFromUnit = sp.niceFromUnit
+            val niceToUnit = sp.niceToUnit
+            val niceFractionDigits = sp.niceFractionDigits
+            val niceAutoCarryThreshold = sp.niceAutoCarryThreshold
+            val niceStrict = sp.niceStrict
+            val signatureSuffix = signature?.toSignatureSuffix() ?: ""
+
+            require(!niceStrict || useIecIdentifier.isJsNullish()) {
+                "Argument \"useIecIdentifier\" ${useIecIdentifier.jsBrief()} must be nullish when in strict mode$signatureSuffix"
+            }
+
+            val niceUseSpace = coerceBoolean(useSpace, DEFAULT_BYTES_USE_SPACE)
+
+            val niceTrimTrailingZero = coerceBoolean(trimTrailingZero, DEFAULT_BYTES_TRIM_TRAILING_ZERO)
+            val niceUseIecIdentifier = if (useIecIdentifier.isJsNullish()) null else Context.toBoolean(useIecIdentifier)
+
+            return StringRhinoStandardizationDetails(niceSource, niceFromUnit, niceToUnit, niceUseIecIdentifier, niceUseSpace, niceFractionDigits, niceTrimTrailingZero, niceAutoCarryThreshold, niceStrict)
+        }
+    }
+
+    private data class UnitConversionDetails(val bytesBD: BigDecimal, val baseBI: BigInteger, val toUnit: String)
+
+    private open class NumberRhinoStandardizationDetails(
+        open val niceSource: Double,
+        open val niceFromUnit: String,
+        open val niceToUnit: String,
+        open val niceFractionDigits: Int,
+        open val niceAutoCarryThreshold: Long,
+        open val niceStrict: Boolean,
+    )
+
+    private class StringRhinoStandardizationDetails(
+        override val niceSource: Double,
+        override val niceFromUnit: String,
+        override val niceToUnit: String,
+        val niceUseIecIdentifier: Boolean?,
+        val niceUseSpace: Boolean,
+        override val niceFractionDigits: Int,
+        val niceTrimTrailingZero: Boolean,
+        override val niceAutoCarryThreshold: Long,
+        override val niceStrict: Boolean,
+    ) : NumberRhinoStandardizationDetails(niceSource, niceFromUnit, niceToUnit, niceFractionDigits, niceAutoCarryThreshold, niceStrict)
+
+    enum class Tough { STRICT, LOOSE, NONE }
+
+}

app/src/main/java/org/autojs/autojs/runtime/api/augment/formatter/Bytes.kt

@@ -0,0 +1,233 @@
+@file:Suppress("MayBeConstant")
+
+package org.autojs.autojs.runtime.api.augment.formatter
+
+import org.autojs.autojs.annotation.RhinoSingletonFunctionInterface
+import org.autojs.autojs.extension.AnyExtensions.isJsBoolean
+import org.autojs.autojs.extension.AnyExtensions.isJsNullish
+import org.autojs.autojs.extension.AnyExtensions.isJsNumber
+import org.autojs.autojs.extension.AnyExtensions.isJsObject
+import org.autojs.autojs.extension.AnyExtensions.isJsString
+import org.autojs.autojs.extension.AnyExtensions.jsBrief
+import org.autojs.autojs.extension.ScriptableObjectExtensions.inquire
+import org.autojs.autojs.runtime.api.augment.Augmentable
+import org.autojs.autojs.runtime.api.augment.Invokable
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.AUTO
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.DEFAULT_BYTES_STRICT
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.IEC_DIV
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.SI_DIV
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.Tough
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.Tough.LOOSE
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.Tough.NONE
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.Tough.STRICT
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes.UNITS
+import org.autojs.autojs.util.RhinoUtils.coerceBoolean
+import org.mozilla.javascript.ScriptableObject
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes as CoreBytes
+
+object Bytes : Augmentable(), Invokable {
+
+    override val selfAssignmentProperties = listOf(
+        "UNITS" to UNITS,
+        "AUTO" to AUTO,
+        "IEC_DIV" to IEC_DIV,
+        "SI_DIV" to SI_DIV,
+    )
+
+    override val selfAssignmentFunctions = listOf(
+        ::strict.name,
+        ::loose.name,
+    )
+
+    override fun invoke(vararg args: Any?): String = ensureArgumentsLengthInRange(args, 1..4) { call(args) }
+
+    @JvmStatic
+    @RhinoSingletonFunctionInterface
+    fun call(args: Array<out Any?>, tough: Tough = NONE): String = ensureArgumentsLengthInRange(args, 1..4) { argList ->
+        val (arg0, arg1, arg2, arg3) = argList
+
+        when (argList.size) {
+            4 -> when {
+                arg3.isJsObject() -> {
+                    val opts = arg3 as ScriptableObject
+                    listOf("source", "fromUnit", "toUnit", "options").forBytesString(
+                        source = arg0,
+                        fromUnit = opts.inquire("fromUnit", arg1),
+                        toUnit = opts.inquire("toUnit", arg2),
+                        useIecIdentifier = opts.inquire("useIecIdentifier"),
+                        useSpace = opts.inquire("useSpace"),
+                        fractionDigits = opts.inquire("fractionDigits"),
+                        trimTrailingZero = opts.inquire("trimTrailingZero"),
+                        autoCarryThreshold = opts.inquire("autoCarryThreshold"),
+                        strict = opts.inquire("strict"),
+                        tough = tough,
+                    )
+                }
+                arg3.isJsBoolean() -> {
+                    listOf("source", "fromUnit", "toUnit", "useIecIdentifier").forBytesString(
+                        source = arg0,
+                        fromUnit = arg1,
+                        toUnit = arg2,
+                        useIecIdentifier = arg3,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg3.isJsNumber() -> {
+                    listOf("source", "fromUnit", "toUnit", "fractionDigits").forBytesString(
+                        source = arg0,
+                        fromUnit = arg1,
+                        toUnit = arg2,
+                        fractionDigits = arg3,
+                        strict = tough == STRICT,
+                    )
+                }
+                else -> throw IllegalArgumentException("Invalid argument[3] ${arg3.jsBrief()} for ${Formatter.key}.bytes")
+            }
+            3 -> when {
+                arg2.isJsObject() -> {
+                    val opts = arg2 as ScriptableObject
+                    listOf("source", "toUnit", "options").forBytesString(
+                        source = arg0,
+                        fromUnit = opts.inquire("fromUnit"),
+                        toUnit = opts.inquire("toUnit", arg1),
+                        fractionDigits = opts.inquire("fractionDigits"),
+                        useIecIdentifier = opts.inquire("useIecIdentifier"),
+                        useSpace = opts.inquire("useSpace"),
+                        trimTrailingZero = opts.inquire("trimTrailingZero"),
+                        autoCarryThreshold = opts.inquire("autoCarryThreshold"),
+                        strict = opts.inquire("strict"),
+                        tough = tough,
+                    )
+                }
+                arg2.isJsString() -> {
+                    listOf("source", "fromUnit", "toUnit").forBytesString(
+                        source = arg0,
+                        fromUnit = arg1,
+                        toUnit = arg2,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg2.isJsBoolean() -> {
+                    listOf("source", "toUnit", "useIecIdentifier").forBytesString(
+                        source = arg0,
+                        toUnit = arg1,
+                        useIecIdentifier = arg2,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg2.isJsNumber() -> {
+                    listOf("source", "toUnit", "fractionDigits").forBytesString(
+                        source = arg0,
+                        toUnit = arg1,
+                        fractionDigits = arg2,
+                        strict = tough == STRICT,
+                    )
+                }
+                else -> throw IllegalArgumentException("Invalid argument[2] ${arg2.jsBrief()} for ${Formatter.key}.bytes")
+            }
+            2 -> when {
+                arg1.isJsObject() -> {
+                    val opts = arg1 as ScriptableObject
+                    listOf("source", "options").forBytesString(
+                        source = arg0,
+                        fromUnit = opts.inquire("fromUnit"),
+                        toUnit = opts.inquire("toUnit"),
+                        fractionDigits = opts.inquire("fractionDigits"),
+                        useIecIdentifier = opts.inquire("useIecIdentifier"),
+                        useSpace = opts.inquire("useSpace"),
+                        trimTrailingZero = opts.inquire("trimTrailingZero"),
+                        autoCarryThreshold = opts.inquire("autoCarryThreshold"),
+                        strict = opts.inquire("strict"),
+                        tough = tough,
+                    )
+                }
+                arg1.isJsString() -> {
+                    listOf("source", "toUnit").forBytesString(
+                        source = arg0,
+                        toUnit = arg1,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg1.isJsBoolean() -> {
+                    listOf("source", "useIecIdentifier").forBytesString(
+                        source = arg0,
+                        useIecIdentifier = arg1,
+                        strict = tough == STRICT,
+                    )
+                }
+                arg1.isJsNumber() -> {
+                    listOf("source", "fractionDigits").forBytesString(
+                        source = arg0,
+                        fractionDigits = arg1,
+                        strict = tough == STRICT,
+                    )
+                }
+                else -> throw IllegalArgumentException("Invalid argument[1] ${arg1.jsBrief()} for ${Formatter.key}.bytes")
+            }
+            1 -> listOf("source").forBytesString(
+                source = arg0,
+                strict = tough == STRICT,
+            )
+            else -> throw IllegalArgumentException("Invalid arguments length ${argList.size} for ${Formatter.key}.bytes")
+        }
+    }
+
+    @JvmStatic
+    @RhinoSingletonFunctionInterface
+    fun strict(args: Array<out Any?>): String = ensureArgumentsLengthInRange(args, 1..4) {
+        call(args, STRICT)
+    }
+
+    @JvmStatic
+    @RhinoSingletonFunctionInterface
+    fun loose(args: Array<out Any?>): String = ensureArgumentsLengthInRange(args, 1..4) {
+        call(args, LOOSE)
+    }
+
+    private fun List<String>.forBytesString(
+        source: Any? = null,
+        fromUnit: Any? = null,
+        toUnit: Any? = null,
+        useIecIdentifier: Any? = null,
+        useSpace: Any? = null,
+        fractionDigits: Any? = null,
+        trimTrailingZero: Any? = null,
+        autoCarryThreshold: Any? = null,
+        strict: Any? = null,
+        tough: Tough = NONE,
+    ): String {
+        val (niceStrict, signature) = when (tough) {
+            STRICT -> {
+                val signature = "${Formatter.key}.bytes.strict(${this.joinToString(", ")})"
+                require(strict.isJsNullish()) {
+                    "Option \"strict\" ${strict.jsBrief()} must be nullish when in strict mode for $signature"
+                }
+                true to signature
+            }
+            LOOSE -> {
+                val signature = "${Formatter.key}.bytes.loose(${this.joinToString(", ")})"
+                require(strict.isJsNullish()) {
+                    "Option \"strict\" ${strict.jsBrief()} must be nullish when in loose mode for $signature"
+                }
+                false to signature
+            }
+            NONE -> {
+                val signature = "${Formatter.key}.bytes(${this.joinToString(", ")})"
+                coerceBoolean(strict, DEFAULT_BYTES_STRICT) to signature
+            }
+        }
+        return CoreBytes.stringRhino(
+            source,
+            fromUnit,
+            toUnit,
+            useIecIdentifier,
+            useSpace,
+            fractionDigits,
+            trimTrailingZero,
+            autoCarryThreshold,
+            niceStrict,
+            signature,
+        )
+    }
+
+}

app/src/main/java/org/autojs/autojs/runtime/api/augment/formatter/Formatter.kt

@@ -0,0 +1,9 @@
+package org.autojs.autojs.runtime.api.augment.formatter
+
+import org.autojs.autojs.runtime.api.augment.Augmentable
+
+object Formatter : Augmentable() {
+
+    override val key = "fmt"
+
+}

app/src/main/java/org/autojs/autojs/runtime/api/augment/s13n/S13n.kt

@@ -1,10 +1,15 @@
+@file:Suppress("MayBeConstant")
+
 package org.autojs.autojs.runtime.api.augment.s13n
 
+import org.autojs.autojs.annotation.RhinoFunctionBody
 import org.autojs.autojs.annotation.RhinoSingletonFunctionInterface
 import org.autojs.autojs.extension.AnyExtensions.isJsNullish
 import org.autojs.autojs.extension.AnyExtensions.isJsObject
+import org.autojs.autojs.extension.AnyExtensions.isJsString
 import org.autojs.autojs.extension.AnyExtensions.jsBrief
 import org.autojs.autojs.extension.ScriptableExtensions.prop
+import org.autojs.autojs.extension.ScriptableObjectExtensions.inquire
 import org.autojs.autojs.runtime.api.augment.Augmentable
 import org.autojs.autojs.runtime.api.augment.colors.Colors
 import org.autojs.autojs.runtime.exception.WrappedIllegalArgumentException
@@ -25,6 +30,7 @@ import kotlin.math.roundToInt
 import kotlin.reflect.full.declaredMemberFunctions
 import kotlin.text.RegexOption.IGNORE_CASE
 import android.graphics.Point as AndroidPoint
+import org.autojs.autojs.runtime.api.augment.converter.core.Bytes as CoreBytes
 import org.opencv.core.Point as OpencvPoint
 
 object S13n : Augmentable() {
@@ -60,6 +66,7 @@ object S13n : Augmentable() {
         ::throwable.name,
         ::point.name,
         ::time.name,
+        ::bytes.name,
     )
 
     @JvmStatic
@@ -139,7 +146,7 @@ object S13n : Augmentable() {
         } ?: when {
             arg1.isJsObject() -> {
                 val options = arg1 as ScriptableObject
-                time(arrayOf(source, options.prop("fromUnit"), options.prop("toUnit")))
+                time(arrayOf(source, options.inquire("fromUnit"), options.inquire("toUnit")))
             }
             else -> {
                 val num = coerceNumber(source, NaN).also { require(!it.isNaN()) { "Failed to make ${arg0.jsBrief()} a number time being" } }
@@ -159,6 +166,47 @@ object S13n : Augmentable() {
         }
     }
 
+    @JvmStatic
+    @RhinoSingletonFunctionInterface
+    fun bytes(args: Array<out Any?>): Any = ensureArgumentsLengthInRange(args, 1..2) { argList ->
+        val (arg0, arg1) = argList
+
+        when (argList.size) {
+            2 -> when {
+                arg1.isJsString() -> listOf("source", "fromUnit").forBytes(source = arg0, fromUnit = arg1)
+                else -> throw WrappedIllegalArgumentException("Invalid argument[1] ${arg1.jsBrief()} for $key.bytes")
+            }
+            1 -> listOf("source").forBytes(source = arg0)
+            else -> throw WrappedIllegalArgumentException("Invalid arguments length ${argList.size} for $key.bytes")
+        }
+    }
+
+    @JvmStatic
+    @JvmOverloads
+    @RhinoFunctionBody
+    fun bytesRhino(
+        source: Any? = null, /* Double */
+        fromUnit: Any? = null, /* String */
+        funcSignature: List<String> = emptyList(),
+    ): Any {
+        val signature = when {
+            funcSignature.isNotEmpty() -> "$key.bytes(${funcSignature.joinToString(", ")})"
+            else -> "$key.bytes()"
+        }
+        return CoreBytes.numberRhino(
+            source = source,
+            fromUnit = fromUnit,
+            toUnit = "B",
+            fractionDigits = 0,
+            signature = signature,
+        )
+    }
+
+    private fun List<String>.forBytes(
+        source: Any? = null, /* Double */
+        fromUnit: Any? = null, /* String */
+    ) = bytesRhino(source, fromUnit, this)
+
     private fun getTimeUnitSourceObject(unit: Any?): TimeUnit = when (unit) {
         is TimeUnit -> unit
         is String -> timeUnitRex.entries.find { it.value.matches(unit) }?.let {

app/src/main/java/org/autojs/autojs/runtime/api/augment/util/Inspect.kt

@@ -2,11 +2,8 @@ package org.autojs.autojs.runtime.api.augment.util
 
 import org.autojs.autojs.annotation.RhinoFunctionBody
 import org.autojs.autojs.core.automator.UiObjectCollection
-import org.autojs.autojs.extension.AnyExtensions.isJsBoolean
 import org.autojs.autojs.extension.AnyExtensions.isJsNonNullObject
 import org.autojs.autojs.extension.AnyExtensions.isJsNullish
-import org.autojs.autojs.extension.AnyExtensions.isJsNumber
-import org.autojs.autojs.extension.AnyExtensions.isJsString
 import org.autojs.autojs.extension.AnyExtensions.jsBrief
 import org.autojs.autojs.extension.ArrayExtensions.toNativeObject
 import org.autojs.autojs.extension.FlexibleArray.Companion.component1
@@ -261,7 +258,13 @@ object Inspect : Augmentable(), Invokable {
     private fun formatValue(ctx: Ctx, `val`: Any?, recurseTimes: Int?): String {
         var value = `val`
 
-        while (value is Wrapper) value = value.unwrap()
+        while (value is Wrapper) {
+            val unwrapped = value.unwrap()
+            if (unwrapped is Number) {
+                return callToStringFunction(value as Scriptable)
+            }
+            value = unwrapped
+        }
 
         if (value is TopLevel) return "[object ${value.className}]"
 
@@ -579,7 +582,7 @@ object Inspect : Augmentable(), Invokable {
             // For some reason, typeof null is "object", so special case here.
             ctx.stylize("null", "null")
         }
-        value.isJsString() -> {
+        value is String -> {
             val content = Context.toString(js_json_stringify(value))
                 .removeSurrounding("\"")
                 .replace(Regex("'"), "\\\'")
@@ -590,16 +593,15 @@ object Inspect : Augmentable(), Invokable {
             //  ! to make a string quoted by single quotation marks.
             //  ! zh-CN:
             //  ! 我认为将字符串用单引号包裹起来并不是一个好主意.
-            //  ! PS: 我认为不应该翻译为 "我不认为...". :)
             //  !
             //  # ctx.stylize("'$content'", "string")
 
             ctx.stylize(content, "string")
         }
-        value.isJsNumber() -> {
+        value is Number -> {
             ctx.stylize(value.toString(), "number")
         }
-        value.isJsBoolean() -> {
+        value is Boolean -> {
             ctx.stylize(Context.toString(value), "boolean")
         }
         else -> null

app/src/main/java/org/autojs/autojs/util/RhinoUtils.kt

@@ -51,6 +51,7 @@ import org.mozilla.javascript.Wrapper
 import org.mozilla.javascript.json.JsonParser
 import java.io.Serializable
 import java.lang.reflect.InvocationTargetException
+import java.math.BigInteger
 import kotlin.math.floor
 import kotlin.math.roundToInt
 import kotlin.math.roundToLong
@@ -66,6 +67,23 @@ object RhinoUtils {
     const val DEFAULT_CALLER = 0x03
     const val DEFAULT_CONSTRUCTOR = 0x04
 
+    /** [Long]: 2^53 - 1. */
+    const val MAX_SAFE_INT_IEEE754_L = 9_007_199_254_740_991L
+    /** [Long]: -(2^53 - 1). */
+    const val MIN_SAFE_INT_IEEE754_L = -9_007_199_254_740_991L
+    /** [Double]: 2^53 - 1. */
+    const val MAX_SAFE_INT_IEEE754_D = 9_007_199_254_740_991.0
+    /** [Double]: -(2^53 - 1). */
+    const val MIN_SAFE_INT_IEEE754_D = -9_007_199_254_740_991.0
+    /** [java.math.BigDecimal]: 2^53 - 1. */
+    val MAX_SAFE_INT_IEEE754_BD = MAX_SAFE_INT_IEEE754_D.toBigDecimal()
+    /** [java.math.BigDecimal]: -(2^53 - 1). */
+    val MIN_SAFE_INT_IEEE754_BD = MIN_SAFE_INT_IEEE754_D.toBigDecimal()
+    /** [java.math.BigInteger]: 2^53 - 1. */
+    val MAX_SAFE_INT_IEEE754_BI = MAX_SAFE_INT_IEEE754_L.toBigInteger()
+    /** [java.math.BigInteger]: -(2^53 - 1). */
+    val MIN_SAFE_INT_IEEE754_BI = MIN_SAFE_INT_IEEE754_L.toBigInteger()
+
     private val TAG = RhinoUtils::class.java.simpleName
 
     @JvmStatic
@@ -274,8 +292,8 @@ object RhinoUtils {
 
     @JvmStatic
     fun unwrap(o: Any?): Any? = when (o) {
-        is String -> o
+        is String, is ConsString -> Context.toString(o)
-        is ConsString -> o.toString()
+        is BigInteger -> o
         is Number -> Context.toNumber(o)
         is Boolean -> Context.toBoolean(o)
         is Wrapper -> unwrap(o.unwrap())