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Diffstat (limited to 'node_modules/@types/node/ts4.8/vm.d.ts')
| -rwxr-xr-x | node_modules/@types/node/ts4.8/vm.d.ts | 507 |
1 files changed, 507 insertions, 0 deletions
diff --git a/node_modules/@types/node/ts4.8/vm.d.ts b/node_modules/@types/node/ts4.8/vm.d.ts new file mode 100755 index 0000000..a46b391 --- /dev/null +++ b/node_modules/@types/node/ts4.8/vm.d.ts @@ -0,0 +1,507 @@ +/** + * The `vm` module enables compiling and running code within V8 Virtual + * Machine contexts. **The `vm` module is not a security mechanism. Do** + * **not use it to run untrusted code.** + * + * JavaScript code can be compiled and run immediately or + * compiled, saved, and run later. + * + * A common use case is to run the code in a different V8 Context. This means + * invoked code has a different global object than the invoking code. + * + * One can provide the context by `contextifying` an + * object. The invoked code treats any property in the context like a + * global variable. Any changes to global variables caused by the invoked + * code are reflected in the context object. + * + * ```js + * const vm = require('vm'); + * + * const x = 1; + * + * const context = { x: 2 }; + * vm.createContext(context); // Contextify the object. + * + * const code = 'x += 40; var y = 17;'; + * // `x` and `y` are global variables in the context. + * // Initially, x has the value 2 because that is the value of context.x. + * vm.runInContext(code, context); + * + * console.log(context.x); // 42 + * console.log(context.y); // 17 + * + * console.log(x); // 1; y is not defined. + * ``` + * @see [source](https://github.com/nodejs/node/blob/v16.9.0/lib/vm.js) + */ +declare module 'vm' { + interface Context extends NodeJS.Dict<any> {} + interface BaseOptions { + /** + * Specifies the filename used in stack traces produced by this script. + * Default: `''`. + */ + filename?: string | undefined; + /** + * Specifies the line number offset that is displayed in stack traces produced by this script. + * Default: `0`. + */ + lineOffset?: number | undefined; + /** + * Specifies the column number offset that is displayed in stack traces produced by this script. + * @default 0 + */ + columnOffset?: number | undefined; + } + interface ScriptOptions extends BaseOptions { + displayErrors?: boolean | undefined; + timeout?: number | undefined; + cachedData?: Buffer | undefined; + /** @deprecated in favor of `script.createCachedData()` */ + produceCachedData?: boolean | undefined; + } + interface RunningScriptOptions extends BaseOptions { + /** + * When `true`, if an `Error` occurs while compiling the `code`, the line of code causing the error is attached to the stack trace. + * Default: `true`. + */ + displayErrors?: boolean | undefined; + /** + * Specifies the number of milliseconds to execute code before terminating execution. + * If execution is terminated, an `Error` will be thrown. This value must be a strictly positive integer. + */ + timeout?: number | undefined; + /** + * If `true`, the execution will be terminated when `SIGINT` (Ctrl+C) is received. + * Existing handlers for the event that have been attached via `process.on('SIGINT')` will be disabled during script execution, but will continue to work after that. + * If execution is terminated, an `Error` will be thrown. + * Default: `false`. + */ + breakOnSigint?: boolean | undefined; + /** + * If set to `afterEvaluate`, microtasks will be run immediately after the script has run. + */ + microtaskMode?: 'afterEvaluate' | undefined; + } + interface CompileFunctionOptions extends BaseOptions { + /** + * Provides an optional data with V8's code cache data for the supplied source. + */ + cachedData?: Buffer | undefined; + /** + * Specifies whether to produce new cache data. + * Default: `false`, + */ + produceCachedData?: boolean | undefined; + /** + * The sandbox/context in which the said function should be compiled in. + */ + parsingContext?: Context | undefined; + /** + * An array containing a collection of context extensions (objects wrapping the current scope) to be applied while compiling + */ + contextExtensions?: Object[] | undefined; + } + interface CreateContextOptions { + /** + * Human-readable name of the newly created context. + * @default 'VM Context i' Where i is an ascending numerical index of the created context. + */ + name?: string | undefined; + /** + * Corresponds to the newly created context for display purposes. + * The origin should be formatted like a `URL`, but with only the scheme, host, and port (if necessary), + * like the value of the `url.origin` property of a URL object. + * Most notably, this string should omit the trailing slash, as that denotes a path. + * @default '' + */ + origin?: string | undefined; + codeGeneration?: + | { + /** + * If set to false any calls to eval or function constructors (Function, GeneratorFunction, etc) + * will throw an EvalError. + * @default true + */ + strings?: boolean | undefined; + /** + * If set to false any attempt to compile a WebAssembly module will throw a WebAssembly.CompileError. + * @default true + */ + wasm?: boolean | undefined; + } + | undefined; + /** + * If set to `afterEvaluate`, microtasks will be run immediately after the script has run. + */ + microtaskMode?: 'afterEvaluate' | undefined; + } + type MeasureMemoryMode = 'summary' | 'detailed'; + interface MeasureMemoryOptions { + /** + * @default 'summary' + */ + mode?: MeasureMemoryMode | undefined; + context?: Context | undefined; + } + interface MemoryMeasurement { + total: { + jsMemoryEstimate: number; + jsMemoryRange: [number, number]; + }; + } + /** + * Instances of the `vm.Script` class contain precompiled scripts that can be + * executed in specific contexts. + * @since v0.3.1 + */ + class Script { + constructor(code: string, options?: ScriptOptions); + /** + * Runs the compiled code contained by the `vm.Script` object within the given`contextifiedObject` and returns the result. Running code does not have access + * to local scope. + * + * The following example compiles code that increments a global variable, sets + * the value of another global variable, then execute the code multiple times. + * The globals are contained in the `context` object. + * + * ```js + * const vm = require('vm'); + * + * const context = { + * animal: 'cat', + * count: 2 + * }; + * + * const script = new vm.Script('count += 1; name = "kitty";'); + * + * vm.createContext(context); + * for (let i = 0; i < 10; ++i) { + * script.runInContext(context); + * } + * + * console.log(context); + * // Prints: { animal: 'cat', count: 12, name: 'kitty' } + * ``` + * + * Using the `timeout` or `breakOnSigint` options will result in new event loops + * and corresponding threads being started, which have a non-zero performance + * overhead. + * @since v0.3.1 + * @param contextifiedObject A `contextified` object as returned by the `vm.createContext()` method. + * @return the result of the very last statement executed in the script. + */ + runInContext(contextifiedObject: Context, options?: RunningScriptOptions): any; + /** + * First contextifies the given `contextObject`, runs the compiled code contained + * by the `vm.Script` object within the created context, and returns the result. + * Running code does not have access to local scope. + * + * The following example compiles code that sets a global variable, then executes + * the code multiple times in different contexts. The globals are set on and + * contained within each individual `context`. + * + * ```js + * const vm = require('vm'); + * + * const script = new vm.Script('globalVar = "set"'); + * + * const contexts = [{}, {}, {}]; + * contexts.forEach((context) => { + * script.runInNewContext(context); + * }); + * + * console.log(contexts); + * // Prints: [{ globalVar: 'set' }, { globalVar: 'set' }, { globalVar: 'set' }] + * ``` + * @since v0.3.1 + * @param contextObject An object that will be `contextified`. If `undefined`, a new object will be created. + * @return the result of the very last statement executed in the script. + */ + runInNewContext(contextObject?: Context, options?: RunningScriptOptions): any; + /** + * Runs the compiled code contained by the `vm.Script` within the context of the + * current `global` object. Running code does not have access to local scope, but_does_ have access to the current `global` object. + * + * The following example compiles code that increments a `global` variable then + * executes that code multiple times: + * + * ```js + * const vm = require('vm'); + * + * global.globalVar = 0; + * + * const script = new vm.Script('globalVar += 1', { filename: 'myfile.vm' }); + * + * for (let i = 0; i < 1000; ++i) { + * script.runInThisContext(); + * } + * + * console.log(globalVar); + * + * // 1000 + * ``` + * @since v0.3.1 + * @return the result of the very last statement executed in the script. + */ + runInThisContext(options?: RunningScriptOptions): any; + /** + * Creates a code cache that can be used with the `Script` constructor's`cachedData` option. Returns a `Buffer`. This method may be called at any + * time and any number of times. + * + * ```js + * const script = new vm.Script(` + * function add(a, b) { + * return a + b; + * } + * + * const x = add(1, 2); + * `); + * + * const cacheWithoutX = script.createCachedData(); + * + * script.runInThisContext(); + * + * const cacheWithX = script.createCachedData(); + * ``` + * @since v10.6.0 + */ + createCachedData(): Buffer; + /** @deprecated in favor of `script.createCachedData()` */ + cachedDataProduced?: boolean | undefined; + cachedDataRejected?: boolean | undefined; + cachedData?: Buffer | undefined; + } + /** + * If given a `contextObject`, the `vm.createContext()` method will `prepare + * that object` so that it can be used in calls to {@link runInContext} or `script.runInContext()`. Inside such scripts, + * the `contextObject` will be the global object, retaining all of its existing + * properties but also having the built-in objects and functions any standard [global object](https://es5.github.io/#x15.1) has. Outside of scripts run by the vm module, global variables + * will remain unchanged. + * + * ```js + * const vm = require('vm'); + * + * global.globalVar = 3; + * + * const context = { globalVar: 1 }; + * vm.createContext(context); + * + * vm.runInContext('globalVar *= 2;', context); + * + * console.log(context); + * // Prints: { globalVar: 2 } + * + * console.log(global.globalVar); + * // Prints: 3 + * ``` + * + * If `contextObject` is omitted (or passed explicitly as `undefined`), a new, + * empty `contextified` object will be returned. + * + * The `vm.createContext()` method is primarily useful for creating a single + * context that can be used to run multiple scripts. For instance, if emulating a + * web browser, the method can be used to create a single context representing a + * window's global object, then run all `<script>` tags together within that + * context. + * + * The provided `name` and `origin` of the context are made visible through the + * Inspector API. + * @since v0.3.1 + * @return contextified object. + */ + function createContext(sandbox?: Context, options?: CreateContextOptions): Context; + /** + * Returns `true` if the given `object` object has been `contextified` using {@link createContext}. + * @since v0.11.7 + */ + function isContext(sandbox: Context): boolean; + /** + * The `vm.runInContext()` method compiles `code`, runs it within the context of + * the `contextifiedObject`, then returns the result. Running code does not have + * access to the local scope. The `contextifiedObject` object _must_ have been + * previously `contextified` using the {@link createContext} method. + * + * If `options` is a string, then it specifies the filename. + * + * The following example compiles and executes different scripts using a single `contextified` object: + * + * ```js + * const vm = require('vm'); + * + * const contextObject = { globalVar: 1 }; + * vm.createContext(contextObject); + * + * for (let i = 0; i < 10; ++i) { + * vm.runInContext('globalVar *= 2;', contextObject); + * } + * console.log(contextObject); + * // Prints: { globalVar: 1024 } + * ``` + * @since v0.3.1 + * @param code The JavaScript code to compile and run. + * @param contextifiedObject The `contextified` object that will be used as the `global` when the `code` is compiled and run. + * @return the result of the very last statement executed in the script. + */ + function runInContext(code: string, contextifiedObject: Context, options?: RunningScriptOptions | string): any; + /** + * The `vm.runInNewContext()` first contextifies the given `contextObject` (or + * creates a new `contextObject` if passed as `undefined`), compiles the `code`, + * runs it within the created context, then returns the result. Running code + * does not have access to the local scope. + * + * If `options` is a string, then it specifies the filename. + * + * The following example compiles and executes code that increments a global + * variable and sets a new one. These globals are contained in the `contextObject`. + * + * ```js + * const vm = require('vm'); + * + * const contextObject = { + * animal: 'cat', + * count: 2 + * }; + * + * vm.runInNewContext('count += 1; name = "kitty"', contextObject); + * console.log(contextObject); + * // Prints: { animal: 'cat', count: 3, name: 'kitty' } + * ``` + * @since v0.3.1 + * @param code The JavaScript code to compile and run. + * @param contextObject An object that will be `contextified`. If `undefined`, a new object will be created. + * @return the result of the very last statement executed in the script. + */ + function runInNewContext(code: string, contextObject?: Context, options?: RunningScriptOptions | string): any; + /** + * `vm.runInThisContext()` compiles `code`, runs it within the context of the + * current `global` and returns the result. Running code does not have access to + * local scope, but does have access to the current `global` object. + * + * If `options` is a string, then it specifies the filename. + * + * The following example illustrates using both `vm.runInThisContext()` and + * the JavaScript [`eval()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval) function to run the same code: + * + * ```js + * const vm = require('vm'); + * let localVar = 'initial value'; + * + * const vmResult = vm.runInThisContext('localVar = "vm";'); + * console.log(`vmResult: '${vmResult}', localVar: '${localVar}'`); + * // Prints: vmResult: 'vm', localVar: 'initial value' + * + * const evalResult = eval('localVar = "eval";'); + * console.log(`evalResult: '${evalResult}', localVar: '${localVar}'`); + * // Prints: evalResult: 'eval', localVar: 'eval' + * ``` + * + * Because `vm.runInThisContext()` does not have access to the local scope,`localVar` is unchanged. In contrast, + * [`eval()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval) _does_ have access to the + * local scope, so the value `localVar` is changed. In this way`vm.runInThisContext()` is much like an [indirect `eval()` call](https://es5.github.io/#x10.4.2), e.g.`(0,eval)('code')`. + * + * ## Example: Running an HTTP server within a VM + * + * When using either `script.runInThisContext()` or {@link runInThisContext}, the code is executed within the current V8 global + * context. The code passed to this VM context will have its own isolated scope. + * + * In order to run a simple web server using the `http` module the code passed to + * the context must either call `require('http')` on its own, or have a reference + * to the `http` module passed to it. For instance: + * + * ```js + * 'use strict'; + * const vm = require('vm'); + * + * const code = ` + * ((require) => { + * const http = require('http'); + * + * http.createServer((request, response) => { + * response.writeHead(200, { 'Content-Type': 'text/plain' }); + * response.end('Hello World\\n'); + * }).listen(8124); + * + * console.log('Server running at http://127.0.0.1:8124/'); + * })`; + * + * vm.runInThisContext(code)(require); + * ``` + * + * The `require()` in the above case shares the state with the context it is + * passed from. This may introduce risks when untrusted code is executed, e.g. + * altering objects in the context in unwanted ways. + * @since v0.3.1 + * @param code The JavaScript code to compile and run. + * @return the result of the very last statement executed in the script. + */ + function runInThisContext(code: string, options?: RunningScriptOptions | string): any; + /** + * Compiles the given code into the provided context (if no context is + * supplied, the current context is used), and returns it wrapped inside a + * function with the given `params`. + * @since v10.10.0 + * @param code The body of the function to compile. + * @param params An array of strings containing all parameters for the function. + */ + function compileFunction(code: string, params?: ReadonlyArray<string>, options?: CompileFunctionOptions): Function; + /** + * Measure the memory known to V8 and used by all contexts known to the + * current V8 isolate, or the main context. + * + * The format of the object that the returned Promise may resolve with is + * specific to the V8 engine and may change from one version of V8 to the next. + * + * The returned result is different from the statistics returned by`v8.getHeapSpaceStatistics()` in that `vm.measureMemory()` measure the + * memory reachable by each V8 specific contexts in the current instance of + * the V8 engine, while the result of `v8.getHeapSpaceStatistics()` measure + * the memory occupied by each heap space in the current V8 instance. + * + * ```js + * const vm = require('vm'); + * // Measure the memory used by the main context. + * vm.measureMemory({ mode: 'summary' }) + * // This is the same as vm.measureMemory() + * .then((result) => { + * // The current format is: + * // { + * // total: { + * // jsMemoryEstimate: 2418479, jsMemoryRange: [ 2418479, 2745799 ] + * // } + * // } + * console.log(result); + * }); + * + * const context = vm.createContext({ a: 1 }); + * vm.measureMemory({ mode: 'detailed', execution: 'eager' }) + * .then((result) => { + * // Reference the context here so that it won't be GC'ed + * // until the measurement is complete. + * console.log(context.a); + * // { + * // total: { + * // jsMemoryEstimate: 2574732, + * // jsMemoryRange: [ 2574732, 2904372 ] + * // }, + * // current: { + * // jsMemoryEstimate: 2438996, + * // jsMemoryRange: [ 2438996, 2768636 ] + * // }, + * // other: [ + * // { + * // jsMemoryEstimate: 135736, + * // jsMemoryRange: [ 135736, 465376 ] + * // } + * // ] + * // } + * console.log(result); + * }); + * ``` + * @since v13.10.0 + * @experimental + */ + function measureMemory(options?: MeasureMemoryOptions): Promise<MemoryMeasurement>; +} +declare module 'node:vm' { + export * from 'vm'; +} |