1 declare module "repl" {
2 import { Interface, Completer, AsyncCompleter } from "readline";
3 import { Context } from "vm";
4 import { InspectOptions } from "util";
6 interface ReplOptions {
8 * The input prompt to display.
13 * The `Readable` stream from which REPL input will be read.
14 * Default: `process.stdin`
16 input?: NodeJS.ReadableStream;
18 * The `Writable` stream to which REPL output will be written.
19 * Default: `process.stdout`
21 output?: NodeJS.WritableStream;
23 * If `true`, specifies that the output should be treated as a TTY terminal, and have
24 * ANSI/VT100 escape codes written to it.
25 * Default: checking the value of the `isTTY` property on the output stream upon
30 * The function to be used when evaluating each given line of input.
31 * Default: an async wrapper for the JavaScript `eval()` function. An `eval` function can
32 * error with `repl.Recoverable` to indicate the input was incomplete and prompt for
35 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_default_evaluation
36 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_custom_evaluation_functions
40 * Defines if the repl prints output previews or not.
41 * @default `true` Always `false` in case `terminal` is falsy.
45 * If `true`, specifies that the default `writer` function should include ANSI color
46 * styling to REPL output. If a custom `writer` function is provided then this has no
48 * Default: the REPL instance's `terminal` value.
52 * If `true`, specifies that the default evaluation function will use the JavaScript
53 * `global` as the context as opposed to creating a new separate context for the REPL
54 * instance. The node CLI REPL sets this value to `true`.
59 * If `true`, specifies that the default writer will not output the return value of a
60 * command if it evaluates to `undefined`.
63 ignoreUndefined?: boolean;
65 * The function to invoke to format the output of each command before writing to `output`.
66 * Default: a wrapper for `util.inspect`.
68 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_customizing_repl_output
72 * An optional function used for custom Tab auto completion.
74 * @see https://nodejs.org/dist/latest-v11.x/docs/api/readline.html#readline_use_of_the_completer_function
76 completer?: Completer | AsyncCompleter;
78 * A flag that specifies whether the default evaluator executes all JavaScript commands in
79 * strict mode or default (sloppy) mode.
80 * Accepted values are:
81 * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
82 * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
83 * prefacing every repl statement with `'use strict'`.
85 replMode?: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT;
87 * Stop evaluating the current piece of code when `SIGINT` is received, i.e. `Ctrl+C` is
88 * pressed. This cannot be used together with a custom `eval` function.
91 breakEvalOnSigint?: boolean;
94 type REPLEval = (this: REPLServer, evalCmd: string, context: Context, file: string, cb: (err: Error | null, result: any) => void) => void;
95 type REPLWriter = (this: REPLServer, obj: any) => string;
98 * This is the default "writer" value, if none is passed in the REPL options,
99 * and it can be overridden by custom print functions.
101 const writer: REPLWriter & { options: InspectOptions };
103 type REPLCommandAction = (this: REPLServer, text: string) => void;
105 interface REPLCommand {
107 * Help text to be displayed when `.help` is entered.
111 * The function to execute, optionally accepting a single string argument.
113 action: REPLCommandAction;
117 * Provides a customizable Read-Eval-Print-Loop (REPL).
119 * Instances of `repl.REPLServer` will accept individual lines of user input, evaluate those
120 * according to a user-defined evaluation function, then output the result. Input and output
121 * may be from `stdin` and `stdout`, respectively, or may be connected to any Node.js `stream`.
123 * Instances of `repl.REPLServer` support automatic completion of inputs, simplistic Emacs-style
124 * line editing, multi-line inputs, ANSI-styled output, saving and restoring current REPL session
125 * state, error recovery, and customizable evaluation functions.
127 * Instances of `repl.REPLServer` are created using the `repl.start()` method and _should not_
128 * be created directly using the JavaScript `new` keyword.
130 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_repl
132 class REPLServer extends Interface {
134 * The `vm.Context` provided to the `eval` function to be used for JavaScript
137 readonly context: Context;
139 * Outdated alias for `input`.
141 readonly inputStream: NodeJS.ReadableStream;
143 * Outdated alias for `output`.
145 readonly outputStream: NodeJS.WritableStream;
147 * The `Readable` stream from which REPL input will be read.
149 readonly input: NodeJS.ReadableStream;
151 * The `Writable` stream to which REPL output will be written.
153 readonly output: NodeJS.WritableStream;
155 * The commands registered via `replServer.defineCommand()`.
157 readonly commands: NodeJS.ReadOnlyDict<REPLCommand>;
159 * A value indicating whether the REPL is currently in "editor mode".
161 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_commands_and_special_keys
163 readonly editorMode: boolean;
165 * A value indicating whether the `_` variable has been assigned.
167 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
169 readonly underscoreAssigned: boolean;
171 * The last evaluation result from the REPL (assigned to the `_` variable inside of the REPL).
173 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
177 * A value indicating whether the `_error` variable has been assigned.
180 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
182 readonly underscoreErrAssigned: boolean;
184 * The last error raised inside the REPL (assigned to the `_error` variable inside of the REPL).
187 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
189 readonly lastError: any;
191 * Specified in the REPL options, this is the function to be used when evaluating each
192 * given line of input. If not specified in the REPL options, this is an async wrapper
193 * for the JavaScript `eval()` function.
195 readonly eval: REPLEval;
197 * Specified in the REPL options, this is a value indicating whether the default
198 * `writer` function should include ANSI color styling to REPL output.
200 readonly useColors: boolean;
202 * Specified in the REPL options, this is a value indicating whether the default `eval`
203 * function will use the JavaScript `global` as the context as opposed to creating a new
204 * separate context for the REPL instance.
206 readonly useGlobal: boolean;
208 * Specified in the REPL options, this is a value indicating whether the default `writer`
209 * function should output the result of a command if it evaluates to `undefined`.
211 readonly ignoreUndefined: boolean;
213 * Specified in the REPL options, this is the function to invoke to format the output of
214 * each command before writing to `outputStream`. If not specified in the REPL options,
215 * this will be a wrapper for `util.inspect`.
217 readonly writer: REPLWriter;
219 * Specified in the REPL options, this is the function to use for custom Tab auto-completion.
221 readonly completer: Completer | AsyncCompleter;
223 * Specified in the REPL options, this is a flag that specifies whether the default `eval`
224 * function should execute all JavaScript commands in strict mode or default (sloppy) mode.
225 * Possible values are:
226 * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
227 * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
228 * prefacing every repl statement with `'use strict'`.
230 readonly replMode: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT;
233 * NOTE: According to the documentation:
235 * > Instances of `repl.REPLServer` are created using the `repl.start()` method and
236 * > _should not_ be created directly using the JavaScript `new` keyword.
238 * `REPLServer` cannot be subclassed due to implementation specifics in NodeJS.
240 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_class_replserver
242 private constructor();
245 * Used to add new `.`-prefixed commands to the REPL instance. Such commands are invoked
246 * by typing a `.` followed by the `keyword`.
248 * @param keyword The command keyword (_without_ a leading `.` character).
249 * @param cmd The function to invoke when the command is processed.
251 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_replserver_definecommand_keyword_cmd
253 defineCommand(keyword: string, cmd: REPLCommandAction | REPLCommand): void;
255 * Readies the REPL instance for input from the user, printing the configured `prompt` to a
256 * new line in the `output` and resuming the `input` to accept new input.
258 * When multi-line input is being entered, an ellipsis is printed rather than the 'prompt'.
260 * This method is primarily intended to be called from within the action function for
261 * commands registered using the `replServer.defineCommand()` method.
263 * @param preserveCursor When `true`, the cursor placement will not be reset to `0`.
265 displayPrompt(preserveCursor?: boolean): void;
267 * Clears any command that has been buffered but not yet executed.
269 * This method is primarily intended to be called from within the action function for
270 * commands registered using the `replServer.defineCommand()` method.
274 clearBufferedCommand(): void;
277 * Initializes a history log file for the REPL instance. When executing the
278 * Node.js binary and using the command line REPL, a history file is initialized
279 * by default. However, this is not the case when creating a REPL
280 * programmatically. Use this method to initialize a history log file when working
281 * with REPL instances programmatically.
282 * @param path The path to the history file
284 setupHistory(path: string, cb: (err: Error | null, repl: this) => void): void;
287 * events.EventEmitter
288 * 1. close - inherited from `readline.Interface`
289 * 2. line - inherited from `readline.Interface`
290 * 3. pause - inherited from `readline.Interface`
291 * 4. resume - inherited from `readline.Interface`
292 * 5. SIGCONT - inherited from `readline.Interface`
293 * 6. SIGINT - inherited from `readline.Interface`
294 * 7. SIGTSTP - inherited from `readline.Interface`
299 addListener(event: string, listener: (...args: any[]) => void): this;
300 addListener(event: "close", listener: () => void): this;
301 addListener(event: "line", listener: (input: string) => void): this;
302 addListener(event: "pause", listener: () => void): this;
303 addListener(event: "resume", listener: () => void): this;
304 addListener(event: "SIGCONT", listener: () => void): this;
305 addListener(event: "SIGINT", listener: () => void): this;
306 addListener(event: "SIGTSTP", listener: () => void): this;
307 addListener(event: "exit", listener: () => void): this;
308 addListener(event: "reset", listener: (context: Context) => void): this;
310 emit(event: string | symbol, ...args: any[]): boolean;
311 emit(event: "close"): boolean;
312 emit(event: "line", input: string): boolean;
313 emit(event: "pause"): boolean;
314 emit(event: "resume"): boolean;
315 emit(event: "SIGCONT"): boolean;
316 emit(event: "SIGINT"): boolean;
317 emit(event: "SIGTSTP"): boolean;
318 emit(event: "exit"): boolean;
319 emit(event: "reset", context: Context): boolean;
321 on(event: string, listener: (...args: any[]) => void): this;
322 on(event: "close", listener: () => void): this;
323 on(event: "line", listener: (input: string) => void): this;
324 on(event: "pause", listener: () => void): this;
325 on(event: "resume", listener: () => void): this;
326 on(event: "SIGCONT", listener: () => void): this;
327 on(event: "SIGINT", listener: () => void): this;
328 on(event: "SIGTSTP", listener: () => void): this;
329 on(event: "exit", listener: () => void): this;
330 on(event: "reset", listener: (context: Context) => void): this;
332 once(event: string, listener: (...args: any[]) => void): this;
333 once(event: "close", listener: () => void): this;
334 once(event: "line", listener: (input: string) => void): this;
335 once(event: "pause", listener: () => void): this;
336 once(event: "resume", listener: () => void): this;
337 once(event: "SIGCONT", listener: () => void): this;
338 once(event: "SIGINT", listener: () => void): this;
339 once(event: "SIGTSTP", listener: () => void): this;
340 once(event: "exit", listener: () => void): this;
341 once(event: "reset", listener: (context: Context) => void): this;
343 prependListener(event: string, listener: (...args: any[]) => void): this;
344 prependListener(event: "close", listener: () => void): this;
345 prependListener(event: "line", listener: (input: string) => void): this;
346 prependListener(event: "pause", listener: () => void): this;
347 prependListener(event: "resume", listener: () => void): this;
348 prependListener(event: "SIGCONT", listener: () => void): this;
349 prependListener(event: "SIGINT", listener: () => void): this;
350 prependListener(event: "SIGTSTP", listener: () => void): this;
351 prependListener(event: "exit", listener: () => void): this;
352 prependListener(event: "reset", listener: (context: Context) => void): this;
354 prependOnceListener(event: string, listener: (...args: any[]) => void): this;
355 prependOnceListener(event: "close", listener: () => void): this;
356 prependOnceListener(event: "line", listener: (input: string) => void): this;
357 prependOnceListener(event: "pause", listener: () => void): this;
358 prependOnceListener(event: "resume", listener: () => void): this;
359 prependOnceListener(event: "SIGCONT", listener: () => void): this;
360 prependOnceListener(event: "SIGINT", listener: () => void): this;
361 prependOnceListener(event: "SIGTSTP", listener: () => void): this;
362 prependOnceListener(event: "exit", listener: () => void): this;
363 prependOnceListener(event: "reset", listener: (context: Context) => void): this;
367 * A flag passed in the REPL options. Evaluates expressions in sloppy mode.
369 const REPL_MODE_SLOPPY: unique symbol;
372 * A flag passed in the REPL options. Evaluates expressions in strict mode.
373 * This is equivalent to prefacing every repl statement with `'use strict'`.
375 const REPL_MODE_STRICT: unique symbol;
378 * Creates and starts a `repl.REPLServer` instance.
380 * @param options The options for the `REPLServer`. If `options` is a string, then it specifies
383 function start(options?: string | ReplOptions): REPLServer;
386 * Indicates a recoverable error that a `REPLServer` can use to support multi-line input.
388 * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_recoverable_errors
390 class Recoverable extends SyntaxError {
393 constructor(err: Error);