1 | declare module "repl" {
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2 | import { Interface, Completer, AsyncCompleter } from "readline";
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3 | import { Context } from "vm";
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4 | import { InspectOptions } from "util";
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5 |
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6 | interface ReplOptions {
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7 | /**
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8 | * The input prompt to display.
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9 | * Default: `"> "`
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10 | */
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11 | prompt?: string;
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12 | /**
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13 | * The `Readable` stream from which REPL input will be read.
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14 | * Default: `process.stdin`
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15 | */
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16 | input?: NodeJS.ReadableStream;
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17 | /**
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18 | * The `Writable` stream to which REPL output will be written.
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19 | * Default: `process.stdout`
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20 | */
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21 | output?: NodeJS.WritableStream;
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22 | /**
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23 | * If `true`, specifies that the output should be treated as a TTY terminal, and have
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24 | * ANSI/VT100 escape codes written to it.
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25 | * Default: checking the value of the `isTTY` property on the output stream upon
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26 | * instantiation.
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27 | */
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28 | terminal?: boolean;
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29 | /**
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30 | * The function to be used when evaluating each given line of input.
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31 | * Default: an async wrapper for the JavaScript `eval()` function. An `eval` function can
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32 | * error with `repl.Recoverable` to indicate the input was incomplete and prompt for
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33 | * additional lines.
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34 | *
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35 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_default_evaluation
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36 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_custom_evaluation_functions
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37 | */
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38 | eval?: REPLEval;
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39 | /**
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40 | * If `true`, specifies that the default `writer` function should include ANSI color
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41 | * styling to REPL output. If a custom `writer` function is provided then this has no
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42 | * effect.
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43 | * Default: the REPL instance's `terminal` value.
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44 | */
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45 | useColors?: boolean;
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46 | /**
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47 | * If `true`, specifies that the default evaluation function will use the JavaScript
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48 | * `global` as the context as opposed to creating a new separate context for the REPL
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49 | * instance. The node CLI REPL sets this value to `true`.
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50 | * Default: `false`.
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51 | */
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52 | useGlobal?: boolean;
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53 | /**
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54 | * If `true`, specifies that the default writer will not output the return value of a
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55 | * command if it evaluates to `undefined`.
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56 | * Default: `false`.
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57 | */
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58 | ignoreUndefined?: boolean;
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59 | /**
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60 | * The function to invoke to format the output of each command before writing to `output`.
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61 | * Default: a wrapper for `util.inspect`.
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62 | *
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63 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_customizing_repl_output
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64 | */
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65 | writer?: REPLWriter;
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66 | /**
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67 | * An optional function used for custom Tab auto completion.
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68 | *
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69 | * @see https://nodejs.org/dist/latest-v11.x/docs/api/readline.html#readline_use_of_the_completer_function
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70 | */
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71 | completer?: Completer | AsyncCompleter;
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72 | /**
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73 | * A flag that specifies whether the default evaluator executes all JavaScript commands in
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74 | * strict mode or default (sloppy) mode.
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75 | * Accepted values are:
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76 | * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
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77 | * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
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78 | * prefacing every repl statement with `'use strict'`.
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79 | */
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80 | replMode?: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT;
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81 | /**
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82 | * Stop evaluating the current piece of code when `SIGINT` is received, i.e. `Ctrl+C` is
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83 | * pressed. This cannot be used together with a custom `eval` function.
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84 | * Default: `false`.
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85 | */
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86 | breakEvalOnSigint?: boolean;
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87 | }
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88 |
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89 | type REPLEval = (this: REPLServer, evalCmd: string, context: Context, file: string, cb: (err: Error | null, result: any) => void) => void;
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90 | type REPLWriter = (this: REPLServer, obj: any) => string;
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91 |
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92 | /**
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93 | * This is the default "writer" value, if none is passed in the REPL options,
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94 | * and it can be overridden by custom print functions.
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95 | */
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96 | const writer: REPLWriter & { options: InspectOptions };
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97 |
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98 | type REPLCommandAction = (this: REPLServer, text: string) => void;
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99 |
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100 | interface REPLCommand {
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101 | /**
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102 | * Help text to be displayed when `.help` is entered.
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103 | */
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104 | help?: string;
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105 | /**
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106 | * The function to execute, optionally accepting a single string argument.
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107 | */
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108 | action: REPLCommandAction;
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109 | }
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110 |
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111 | /**
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112 | * Provides a customizable Read-Eval-Print-Loop (REPL).
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113 | *
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114 | * Instances of `repl.REPLServer` will accept individual lines of user input, evaluate those
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115 | * according to a user-defined evaluation function, then output the result. Input and output
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116 | * may be from `stdin` and `stdout`, respectively, or may be connected to any Node.js `stream`.
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117 | *
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118 | * Instances of `repl.REPLServer` support automatic completion of inputs, simplistic Emacs-style
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119 | * line editing, multi-line inputs, ANSI-styled output, saving and restoring current REPL session
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120 | * state, error recovery, and customizable evaluation functions.
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121 | *
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122 | * Instances of `repl.REPLServer` are created using the `repl.start()` method and _should not_
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123 | * be created directly using the JavaScript `new` keyword.
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124 | *
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125 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_repl
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126 | */
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127 | class REPLServer extends Interface {
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128 | /**
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129 | * The `vm.Context` provided to the `eval` function to be used for JavaScript
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130 | * evaluation.
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131 | */
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132 | readonly context: Context;
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133 | /**
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134 | * The `Readable` stream from which REPL input will be read.
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135 | */
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136 | readonly inputStream: NodeJS.ReadableStream;
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137 | /**
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138 | * The `Writable` stream to which REPL output will be written.
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139 | */
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140 | readonly outputStream: NodeJS.WritableStream;
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141 | /**
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142 | * The commands registered via `replServer.defineCommand()`.
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143 | */
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144 | readonly commands: { readonly [name: string]: REPLCommand | undefined };
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145 | /**
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146 | * A value indicating whether the REPL is currently in "editor mode".
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147 | *
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148 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_commands_and_special_keys
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149 | */
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150 | readonly editorMode: boolean;
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151 | /**
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152 | * A value indicating whether the `_` variable has been assigned.
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153 | *
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154 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
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155 | */
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156 | readonly underscoreAssigned: boolean;
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157 | /**
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158 | * The last evaluation result from the REPL (assigned to the `_` variable inside of the REPL).
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159 | *
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160 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
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161 | */
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162 | readonly last: any;
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163 | /**
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164 | * A value indicating whether the `_error` variable has been assigned.
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165 | *
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166 | * @since v9.8.0
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167 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
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168 | */
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169 | readonly underscoreErrAssigned: boolean;
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170 | /**
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171 | * The last error raised inside the REPL (assigned to the `_error` variable inside of the REPL).
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172 | *
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173 | * @since v9.8.0
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174 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
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175 | */
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176 | readonly lastError: any;
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177 | /**
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178 | * Specified in the REPL options, this is the function to be used when evaluating each
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179 | * given line of input. If not specified in the REPL options, this is an async wrapper
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180 | * for the JavaScript `eval()` function.
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181 | */
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182 | readonly eval: REPLEval;
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183 | /**
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184 | * Specified in the REPL options, this is a value indicating whether the default
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185 | * `writer` function should include ANSI color styling to REPL output.
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186 | */
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187 | readonly useColors: boolean;
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188 | /**
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189 | * Specified in the REPL options, this is a value indicating whether the default `eval`
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190 | * function will use the JavaScript `global` as the context as opposed to creating a new
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191 | * separate context for the REPL instance.
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192 | */
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193 | readonly useGlobal: boolean;
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194 | /**
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195 | * Specified in the REPL options, this is a value indicating whether the default `writer`
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196 | * function should output the result of a command if it evaluates to `undefined`.
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197 | */
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198 | readonly ignoreUndefined: boolean;
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199 | /**
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200 | * Specified in the REPL options, this is the function to invoke to format the output of
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201 | * each command before writing to `outputStream`. If not specified in the REPL options,
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202 | * this will be a wrapper for `util.inspect`.
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203 | */
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204 | readonly writer: REPLWriter;
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205 | /**
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206 | * Specified in the REPL options, this is the function to use for custom Tab auto-completion.
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207 | */
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208 | readonly completer: Completer | AsyncCompleter;
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209 | /**
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210 | * Specified in the REPL options, this is a flag that specifies whether the default `eval`
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211 | * function should execute all JavaScript commands in strict mode or default (sloppy) mode.
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212 | * Possible values are:
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213 | * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
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214 | * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
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215 | * prefacing every repl statement with `'use strict'`.
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216 | */
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217 | readonly replMode: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT;
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218 |
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219 | /**
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220 | * NOTE: According to the documentation:
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221 | *
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222 | * > Instances of `repl.REPLServer` are created using the `repl.start()` method and
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223 | * > _should not_ be created directly using the JavaScript `new` keyword.
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224 | *
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225 | * `REPLServer` cannot be subclassed due to implementation specifics in NodeJS.
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226 | *
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227 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_class_replserver
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228 | */
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229 | private constructor();
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230 |
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231 | /**
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232 | * Used to add new `.`-prefixed commands to the REPL instance. Such commands are invoked
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233 | * by typing a `.` followed by the `keyword`.
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234 | *
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235 | * @param keyword The command keyword (_without_ a leading `.` character).
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236 | * @param cmd The function to invoke when the command is processed.
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237 | *
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238 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_replserver_definecommand_keyword_cmd
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239 | */
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240 | defineCommand(keyword: string, cmd: REPLCommandAction | REPLCommand): void;
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241 | /**
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242 | * Readies the REPL instance for input from the user, printing the configured `prompt` to a
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243 | * new line in the `output` and resuming the `input` to accept new input.
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244 | *
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245 | * When multi-line input is being entered, an ellipsis is printed rather than the 'prompt'.
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246 | *
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247 | * This method is primarily intended to be called from within the action function for
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248 | * commands registered using the `replServer.defineCommand()` method.
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249 | *
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250 | * @param preserveCursor When `true`, the cursor placement will not be reset to `0`.
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251 | */
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252 | displayPrompt(preserveCursor?: boolean): void;
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253 | /**
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254 | * Clears any command that has been buffered but not yet executed.
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255 | *
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256 | * This method is primarily intended to be called from within the action function for
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257 | * commands registered using the `replServer.defineCommand()` method.
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258 | *
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259 | * @since v9.0.0
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260 | */
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261 | clearBufferedCommand(): void;
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262 |
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263 | /**
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264 | * Initializes a history log file for the REPL instance. When executing the
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265 | * Node.js binary and using the command line REPL, a history file is initialized
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266 | * by default. However, this is not the case when creating a REPL
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267 | * programmatically. Use this method to initialize a history log file when working
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268 | * with REPL instances programmatically.
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269 | * @param path The path to the history file
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270 | */
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271 | setupHistory(path: string, cb: (err: Error | null, repl: this) => void): void;
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272 |
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273 | /**
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274 | * events.EventEmitter
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275 | * 1. close - inherited from `readline.Interface`
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276 | * 2. line - inherited from `readline.Interface`
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277 | * 3. pause - inherited from `readline.Interface`
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278 | * 4. resume - inherited from `readline.Interface`
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279 | * 5. SIGCONT - inherited from `readline.Interface`
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280 | * 6. SIGINT - inherited from `readline.Interface`
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281 | * 7. SIGTSTP - inherited from `readline.Interface`
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282 | * 8. exit
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283 | * 9. reset
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284 | */
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285 |
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286 | addListener(event: string, listener: (...args: any[]) => void): this;
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287 | addListener(event: "close", listener: () => void): this;
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288 | addListener(event: "line", listener: (input: string) => void): this;
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289 | addListener(event: "pause", listener: () => void): this;
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290 | addListener(event: "resume", listener: () => void): this;
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291 | addListener(event: "SIGCONT", listener: () => void): this;
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292 | addListener(event: "SIGINT", listener: () => void): this;
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293 | addListener(event: "SIGTSTP", listener: () => void): this;
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294 | addListener(event: "exit", listener: () => void): this;
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295 | addListener(event: "reset", listener: (context: Context) => void): this;
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296 |
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297 | emit(event: string | symbol, ...args: any[]): boolean;
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298 | emit(event: "close"): boolean;
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299 | emit(event: "line", input: string): boolean;
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300 | emit(event: "pause"): boolean;
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301 | emit(event: "resume"): boolean;
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302 | emit(event: "SIGCONT"): boolean;
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303 | emit(event: "SIGINT"): boolean;
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304 | emit(event: "SIGTSTP"): boolean;
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305 | emit(event: "exit"): boolean;
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306 | emit(event: "reset", context: Context): boolean;
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307 |
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308 | on(event: string, listener: (...args: any[]) => void): this;
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309 | on(event: "close", listener: () => void): this;
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310 | on(event: "line", listener: (input: string) => void): this;
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311 | on(event: "pause", listener: () => void): this;
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312 | on(event: "resume", listener: () => void): this;
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313 | on(event: "SIGCONT", listener: () => void): this;
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314 | on(event: "SIGINT", listener: () => void): this;
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315 | on(event: "SIGTSTP", listener: () => void): this;
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316 | on(event: "exit", listener: () => void): this;
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317 | on(event: "reset", listener: (context: Context) => void): this;
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318 |
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319 | once(event: string, listener: (...args: any[]) => void): this;
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320 | once(event: "close", listener: () => void): this;
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321 | once(event: "line", listener: (input: string) => void): this;
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322 | once(event: "pause", listener: () => void): this;
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323 | once(event: "resume", listener: () => void): this;
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324 | once(event: "SIGCONT", listener: () => void): this;
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325 | once(event: "SIGINT", listener: () => void): this;
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326 | once(event: "SIGTSTP", listener: () => void): this;
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327 | once(event: "exit", listener: () => void): this;
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328 | once(event: "reset", listener: (context: Context) => void): this;
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329 |
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330 | prependListener(event: string, listener: (...args: any[]) => void): this;
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331 | prependListener(event: "close", listener: () => void): this;
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332 | prependListener(event: "line", listener: (input: string) => void): this;
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333 | prependListener(event: "pause", listener: () => void): this;
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334 | prependListener(event: "resume", listener: () => void): this;
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335 | prependListener(event: "SIGCONT", listener: () => void): this;
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336 | prependListener(event: "SIGINT", listener: () => void): this;
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337 | prependListener(event: "SIGTSTP", listener: () => void): this;
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338 | prependListener(event: "exit", listener: () => void): this;
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339 | prependListener(event: "reset", listener: (context: Context) => void): this;
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340 |
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341 | prependOnceListener(event: string, listener: (...args: any[]) => void): this;
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342 | prependOnceListener(event: "close", listener: () => void): this;
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343 | prependOnceListener(event: "line", listener: (input: string) => void): this;
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344 | prependOnceListener(event: "pause", listener: () => void): this;
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345 | prependOnceListener(event: "resume", listener: () => void): this;
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346 | prependOnceListener(event: "SIGCONT", listener: () => void): this;
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347 | prependOnceListener(event: "SIGINT", listener: () => void): this;
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348 | prependOnceListener(event: "SIGTSTP", listener: () => void): this;
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349 | prependOnceListener(event: "exit", listener: () => void): this;
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350 | prependOnceListener(event: "reset", listener: (context: Context) => void): this;
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351 | }
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352 |
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353 | /**
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354 | * A flag passed in the REPL options. Evaluates expressions in sloppy mode.
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355 | */
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356 | export const REPL_MODE_SLOPPY: symbol; // TODO: unique symbol
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357 |
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358 | /**
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359 | * A flag passed in the REPL options. Evaluates expressions in strict mode.
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360 | * This is equivalent to prefacing every repl statement with `'use strict'`.
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361 | */
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362 | export const REPL_MODE_STRICT: symbol; // TODO: unique symbol
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363 |
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364 | /**
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365 | * Creates and starts a `repl.REPLServer` instance.
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366 | *
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367 | * @param options The options for the `REPLServer`. If `options` is a string, then it specifies
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368 | * the input prompt.
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369 | */
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370 | function start(options?: string | ReplOptions): REPLServer;
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371 |
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372 | /**
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373 | * Indicates a recoverable error that a `REPLServer` can use to support multi-line input.
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374 | *
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375 | * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_recoverable_errors
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376 | */
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377 | class Recoverable extends SyntaxError {
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378 | err: Error;
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379 |
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380 | constructor(err: Error);
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381 | }
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382 | }
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