1 | declare module "worker_threads" {
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2 | import { Context } from "vm";
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3 | import { EventEmitter } from "events";
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4 | import { Readable, Writable } from "stream";
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5 |
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6 | const isMainThread: boolean;
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7 | const parentPort: null | MessagePort;
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8 | const threadId: number;
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9 | const workerData: any;
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10 |
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11 | class MessageChannel {
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12 | readonly port1: MessagePort;
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13 | readonly port2: MessagePort;
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14 | }
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15 |
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16 | class MessagePort extends EventEmitter {
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17 | close(): void;
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18 | postMessage(value: any, transferList?: Array<ArrayBuffer | MessagePort>): void;
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19 | ref(): void;
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20 | unref(): void;
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21 | start(): void;
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22 |
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23 | addListener(event: "close", listener: () => void): this;
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24 | addListener(event: "message", listener: (value: any) => void): this;
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25 | addListener(event: string | symbol, listener: (...args: any[]) => void): this;
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26 |
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27 | emit(event: "close"): boolean;
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28 | emit(event: "message", value: any): boolean;
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29 | emit(event: string | symbol, ...args: any[]): boolean;
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30 |
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31 | on(event: "close", listener: () => void): this;
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32 | on(event: "message", listener: (value: any) => void): this;
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33 | on(event: string | symbol, listener: (...args: any[]) => void): this;
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34 |
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35 | once(event: "close", listener: () => void): this;
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36 | once(event: "message", listener: (value: any) => void): this;
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37 | once(event: string | symbol, listener: (...args: any[]) => void): this;
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38 |
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39 | prependListener(event: "close", listener: () => void): this;
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40 | prependListener(event: "message", listener: (value: any) => void): this;
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41 | prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
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42 |
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43 | prependOnceListener(event: "close", listener: () => void): this;
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44 | prependOnceListener(event: "message", listener: (value: any) => void): this;
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45 | prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
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46 |
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47 | removeListener(event: "close", listener: () => void): this;
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48 | removeListener(event: "message", listener: (value: any) => void): this;
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49 | removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
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50 |
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51 | off(event: "close", listener: () => void): this;
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52 | off(event: "message", listener: (value: any) => void): this;
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53 | off(event: string | symbol, listener: (...args: any[]) => void): this;
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54 | }
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55 |
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56 | interface WorkerOptions {
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57 | |
58 |
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59 |
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60 |
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61 |
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62 |
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63 | argv?: any[];
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64 | eval?: boolean;
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65 | workerData?: any;
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66 | stdin?: boolean;
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67 | stdout?: boolean;
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68 | stderr?: boolean;
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69 | execArgv?: string[];
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70 | resourceLimits?: ResourceLimits;
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71 | }
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72 |
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73 | interface ResourceLimits {
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74 | maxYoungGenerationSizeMb?: number;
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75 | maxOldGenerationSizeMb?: number;
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76 | codeRangeSizeMb?: number;
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77 | }
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78 |
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79 | class Worker extends EventEmitter {
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80 | readonly stdin: Writable | null;
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81 | readonly stdout: Readable;
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82 | readonly stderr: Readable;
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83 | readonly threadId: number;
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84 | readonly resourceLimits?: ResourceLimits;
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85 |
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86 | constructor(filename: string, options?: WorkerOptions);
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87 |
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88 | postMessage(value: any, transferList?: Array<ArrayBuffer | MessagePort>): void;
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89 | ref(): void;
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90 | unref(): void;
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91 | /**
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92 | * Stop all JavaScript execution in the worker thread as soon as possible.
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93 | * Returns a Promise for the exit code that is fulfilled when the `exit` event is emitted.
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94 | */
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95 | terminate(): Promise<number>;
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96 | /**
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97 | * Transfer a `MessagePort` to a different `vm` Context. The original `port`
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98 | * object will be rendered unusable, and the returned `MessagePort` instance will
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99 | * take its place.
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100 | *
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101 | * The returned `MessagePort` will be an object in the target context, and will
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102 | * inherit from its global `Object` class. Objects passed to the
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103 | * `port.onmessage()` listener will also be created in the target context
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104 | * and inherit from its global `Object` class.
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105 | *
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106 | * However, the created `MessagePort` will no longer inherit from
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107 | * `EventEmitter`, and only `port.onmessage()` can be used to receive
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108 | * events using it.
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109 | */
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110 | moveMessagePortToContext(port: MessagePort, context: Context): MessagePort;
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111 |
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112 | /**
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113 | * Receive a single message from a given `MessagePort`. If no message is available,
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114 | * `undefined` is returned, otherwise an object with a single `message` property
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115 | * that contains the message payload, corresponding to the oldest message in the
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116 | * `MessagePort`’s queue.
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117 | */
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118 | receiveMessageOnPort(port: MessagePort): {} | undefined;
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119 |
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120 | addListener(event: "error", listener: (err: Error) => void): this;
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121 | addListener(event: "exit", listener: (exitCode: number) => void): this;
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122 | addListener(event: "message", listener: (value: any) => void): this;
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123 | addListener(event: "online", listener: () => void): this;
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124 | addListener(event: string | symbol, listener: (...args: any[]) => void): this;
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125 |
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126 | emit(event: "error", err: Error): boolean;
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127 | emit(event: "exit", exitCode: number): boolean;
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128 | emit(event: "message", value: any): boolean;
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129 | emit(event: "online"): boolean;
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130 | emit(event: string | symbol, ...args: any[]): boolean;
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131 |
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132 | on(event: "error", listener: (err: Error) => void): this;
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133 | on(event: "exit", listener: (exitCode: number) => void): this;
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134 | on(event: "message", listener: (value: any) => void): this;
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135 | on(event: "online", listener: () => void): this;
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136 | on(event: string | symbol, listener: (...args: any[]) => void): this;
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137 |
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138 | once(event: "error", listener: (err: Error) => void): this;
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139 | once(event: "exit", listener: (exitCode: number) => void): this;
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140 | once(event: "message", listener: (value: any) => void): this;
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141 | once(event: "online", listener: () => void): this;
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142 | once(event: string | symbol, listener: (...args: any[]) => void): this;
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143 |
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144 | prependListener(event: "error", listener: (err: Error) => void): this;
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145 | prependListener(event: "exit", listener: (exitCode: number) => void): this;
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146 | prependListener(event: "message", listener: (value: any) => void): this;
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147 | prependListener(event: "online", listener: () => void): this;
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148 | prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
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149 |
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150 | prependOnceListener(event: "error", listener: (err: Error) => void): this;
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151 | prependOnceListener(event: "exit", listener: (exitCode: number) => void): this;
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152 | prependOnceListener(event: "message", listener: (value: any) => void): this;
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153 | prependOnceListener(event: "online", listener: () => void): this;
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154 | prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
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155 |
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156 | removeListener(event: "error", listener: (err: Error) => void): this;
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157 | removeListener(event: "exit", listener: (exitCode: number) => void): this;
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158 | removeListener(event: "message", listener: (value: any) => void): this;
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159 | removeListener(event: "online", listener: () => void): this;
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160 | removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
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161 |
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162 | off(event: "error", listener: (err: Error) => void): this;
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163 | off(event: "exit", listener: (exitCode: number) => void): this;
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164 | off(event: "message", listener: (value: any) => void): this;
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165 | off(event: "online", listener: () => void): this;
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166 | off(event: string | symbol, listener: (...args: any[]) => void): this;
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167 | }
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168 | }
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