new vm.Script(code[, options])

• code <string> 要编译的 JavaScript 代码。

  ¥code <string> The JavaScript code to compile.

• options <Object> | <string>

  • filename <string> 指定此脚本生成的堆栈跟踪中使用的文件名。默认值：'evalmachine.<anonymous>'。

    ¥filename <string> Specifies the filename used in stack traces produced by this script. Default: 'evalmachine.<anonymous>'.

  • lineOffset <number> 指定在此脚本生成的堆栈跟踪中显示的行号偏移量。默认值：0。

    ¥lineOffset <number> Specifies the line number offset that is displayed in stack traces produced by this script. Default: 0.

  • columnOffset <number> 指定在此脚本生成的堆栈跟踪中显示的第一行列号偏移量。默认值：0。

    ¥columnOffset <number> Specifies the first-line column number offset that is displayed in stack traces produced by this script. Default: 0.

  • cachedData <Buffer> | <TypedArray> | <DataView> 为所提供的源提供可选的 Buffer 或 TypedArray 或 DataView，其中包含 V8 的代码缓存数据。当提供时，cachedDataRejected 值将设置为 true 或 false，具体取决于 V8 对数据的接受程度。

    ¥cachedData <Buffer> | <TypedArray> | <DataView> Provides an optional Buffer or TypedArray, or DataView with V8's code cache data for the supplied source. When supplied, the cachedDataRejected value will be set to either true or false depending on acceptance of the data by V8.

  • produceCachedData <boolean> 当 true 且没有 cachedData 存在时，则 V8 将尝试为 code 生成代码缓存数据。当成功后，会生成带有 V8 代码缓存数据的 Buffer 并存储在返回的 vm.Script 实例的 cachedData 属性中。cachedDataProduced 值将设置为 true 或 false，这取决于代码缓存数据是否成功生成。此选项已弃用，取而代之的是 script.createCachedData()。默认值：false。

    ¥produceCachedData <boolean> When true and no cachedData is present, V8 will attempt to produce code cache data for code. Upon success, a Buffer with V8's code cache data will be produced and stored in the cachedData property of the returned vm.Script instance. The cachedDataProduced value will be set to either true or false depending on whether code cache data is produced successfully. This option is deprecated in favor of script.createCachedData(). Default: false.

  • importModuleDynamically <Function> 在调用 import() 时在评估此模块期间调用。如果未指定此选项，则调用 import() 将使用 ERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING 拒绝。此选项是实验模块 API 的一部分。不建议在生产环境中使用它。如果未设置 --experimental-vm-modules，则该回调将被忽略，对 import() 的调用将被拒绝并返回 ERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING_FLAG。

    ¥importModuleDynamically <Function> Called during evaluation of this module when import() is called. If this option is not specified, calls to import() will reject with ERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING. This option is part of the experimental modules API. We do not recommend using it in a production environment. If --experimental-vm-modules isn't set, this callback will be ignored and calls to import() will reject with ERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING_FLAG.

    • specifier <string> 说明符传递给 import()

      ¥specifier <string> specifier passed to import()

    • script <vm.Script>

    • importAttributes <Object> 传给 optionsExpression 可选参数的 "with" 值，如果没有提供值，则为空对象。

      ¥importAttributes <Object> The "with" value passed to the optionsExpression optional parameter, or an empty object if no value was provided.

    • 返回：<Module Namespace Object> | <vm.Module> 建议返回 vm.Module 以利用错误跟踪，并避免包含 then 函数导出的命名空间出现问题。

      ¥Returns: <Module Namespace Object> | <vm.Module> Returning a vm.Module is recommended in order to take advantage of error tracking, and to avoid issues with namespaces that contain then function exports.

如果 options 是字符串，则指定文件名。

¥If options is a string, then it specifies the filename.

创建新的 vm.Script 对象编译 code 但不运行它。编译后的 vm.Script 可以多次运行。code 没有绑定到任何全局对象；相反，它在每次运行之前绑定，仅针对该运行。

¥Creating a new vm.Script object compiles code but does not run it. The compiled vm.Script can be run later multiple times. The code is not bound to any global object; rather, it is bound before each run, just for that run.