1 | declare module 'child_process' {
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2 | import * as events from 'events';
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3 | import * as net from 'net';
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4 | import { Writable, Readable, Stream, Pipe } from 'stream';
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5 |
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6 | interface ChildProcess extends events.EventEmitter {
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7 | stdin: Writable | null;
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8 | stdout: Readable | null;
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9 | stderr: Readable | null;
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10 | readonly channel?: Pipe | null | undefined;
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11 | readonly stdio: [
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12 | Writable | null,
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13 | Readable | null,
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14 | Readable | null,
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15 | Readable | Writable | null | undefined,
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16 | Readable | Writable | null | undefined
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17 | ];
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18 | readonly killed: boolean;
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19 | readonly pid: number;
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20 | readonly connected: boolean;
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21 | readonly exitCode: number | null;
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22 | readonly signalCode: number | null;
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23 | readonly spawnargs: string[];
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24 | readonly spawnfile: string;
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25 | kill(signal?: NodeJS.Signals | number): boolean;
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26 | send(message: any, callback?: (error: Error | null) => void): boolean;
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27 | send(message: any, sendHandle?: net.Socket | net.Server, callback?: (error: Error | null) => void): boolean;
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28 | send(message: any, sendHandle?: net.Socket | net.Server, options?: MessageOptions, callback?: (error: Error | null) => void): boolean;
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29 | disconnect(): void;
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30 | unref(): void;
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31 | ref(): void;
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32 |
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33 | |
34 |
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35 |
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36 |
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37 |
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38 |
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39 |
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40 |
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41 |
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42 | addListener(event: string, listener: (...args: any[]) => void): this;
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43 | addListener(event: "close", listener: (code: number, signal: NodeJS.Signals) => void): this;
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44 | addListener(event: "disconnect", listener: () => void): this;
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45 | addListener(event: "error", listener: (err: Error) => void): this;
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46 | addListener(event: "exit", listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
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47 | addListener(event: "message", listener: (message: any, sendHandle: net.Socket | net.Server) => void): this;
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48 |
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49 | emit(event: string | symbol, ...args: any[]): boolean;
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50 | emit(event: "close", code: number, signal: NodeJS.Signals): boolean;
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51 | emit(event: "disconnect"): boolean;
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52 | emit(event: "error", err: Error): boolean;
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53 | emit(event: "exit", code: number | null, signal: NodeJS.Signals | null): boolean;
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54 | emit(event: "message", message: any, sendHandle: net.Socket | net.Server): boolean;
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55 |
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56 | on(event: string, listener: (...args: any[]) => void): this;
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57 | on(event: "close", listener: (code: number, signal: NodeJS.Signals) => void): this;
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58 | on(event: "disconnect", listener: () => void): this;
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59 | on(event: "error", listener: (err: Error) => void): this;
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60 | on(event: "exit", listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
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61 | on(event: "message", listener: (message: any, sendHandle: net.Socket | net.Server) => void): this;
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62 |
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63 | once(event: string, listener: (...args: any[]) => void): this;
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64 | once(event: "close", listener: (code: number, signal: NodeJS.Signals) => void): this;
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65 | once(event: "disconnect", listener: () => void): this;
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66 | once(event: "error", listener: (err: Error) => void): this;
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67 | once(event: "exit", listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
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68 | once(event: "message", listener: (message: any, sendHandle: net.Socket | net.Server) => void): this;
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69 |
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70 | prependListener(event: string, listener: (...args: any[]) => void): this;
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71 | prependListener(event: "close", listener: (code: number, signal: NodeJS.Signals) => void): this;
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72 | prependListener(event: "disconnect", listener: () => void): this;
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73 | prependListener(event: "error", listener: (err: Error) => void): this;
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74 | prependListener(event: "exit", listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
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75 | prependListener(event: "message", listener: (message: any, sendHandle: net.Socket | net.Server) => void): this;
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76 |
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77 | prependOnceListener(event: string, listener: (...args: any[]) => void): this;
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78 | prependOnceListener(event: "close", listener: (code: number, signal: NodeJS.Signals) => void): this;
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79 | prependOnceListener(event: "disconnect", listener: () => void): this;
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80 | prependOnceListener(event: "error", listener: (err: Error) => void): this;
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81 | prependOnceListener(event: "exit", listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
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82 | prependOnceListener(event: "message", listener: (message: any, sendHandle: net.Socket | net.Server) => void): this;
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83 | }
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84 |
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85 |
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86 | interface ChildProcessWithoutNullStreams extends ChildProcess {
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87 | stdin: Writable;
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88 | stdout: Readable;
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89 | stderr: Readable;
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90 | readonly stdio: [
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91 | Writable,
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92 | Readable,
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93 | Readable,
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94 | Readable | Writable | null | undefined,
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95 | Readable | Writable | null | undefined
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96 | ];
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97 | }
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98 |
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99 |
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100 | interface ChildProcessByStdio<
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101 | I extends null | Writable,
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102 | O extends null | Readable,
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103 | E extends null | Readable,
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104 | > extends ChildProcess {
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105 | stdin: I;
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106 | stdout: O;
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107 | stderr: E;
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108 | readonly stdio: [
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109 | I,
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110 | O,
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111 | E,
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112 | Readable | Writable | null | undefined,
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113 | Readable | Writable | null | undefined
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114 | ];
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115 | }
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116 |
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117 | interface MessageOptions {
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118 | keepOpen?: boolean | undefined;
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119 | }
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120 |
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121 | type StdioOptions = "pipe" | "ignore" | "inherit" | Array<("pipe" | "ipc" | "ignore" | "inherit" | Stream | number | null | undefined)>;
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122 |
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123 | interface ProcessEnvOptions {
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124 | uid?: number | undefined;
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125 | gid?: number | undefined;
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126 | cwd?: string | undefined;
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127 | env?: NodeJS.ProcessEnv | undefined;
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128 | }
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129 |
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130 | interface CommonOptions extends ProcessEnvOptions {
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131 | |
132 |
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133 |
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134 | windowsHide?: boolean | undefined;
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135 | |
136 |
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137 |
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138 | timeout?: number | undefined;
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139 | }
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140 |
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141 | interface SpawnOptions extends CommonOptions {
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142 | argv0?: string | undefined;
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143 | stdio?: StdioOptions | undefined;
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144 | detached?: boolean | undefined;
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145 | shell?: boolean | string | undefined;
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146 | windowsVerbatimArguments?: boolean | undefined;
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147 | }
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148 |
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149 | interface SpawnOptionsWithoutStdio extends SpawnOptions {
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150 | stdio?: 'pipe' | Array<null | undefined | 'pipe'> | undefined;
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151 | }
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152 |
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153 | type StdioNull = 'inherit' | 'ignore' | Stream;
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154 | type StdioPipe = undefined | null | 'pipe';
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155 |
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156 | interface SpawnOptionsWithStdioTuple<
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157 | Stdin extends StdioNull | StdioPipe,
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158 | Stdout extends StdioNull | StdioPipe,
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159 | Stderr extends StdioNull | StdioPipe,
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160 | > extends SpawnOptions {
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161 | stdio: [Stdin, Stdout, Stderr];
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162 | }
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163 |
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164 |
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165 | function spawn(command: string, options?: SpawnOptionsWithoutStdio): ChildProcessWithoutNullStreams;
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166 |
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167 | function spawn(
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168 | command: string,
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169 | options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioPipe>,
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170 | ): ChildProcessByStdio<Writable, Readable, Readable>;
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171 | function spawn(
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172 | command: string,
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173 | options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioNull>,
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174 | ): ChildProcessByStdio<Writable, Readable, null>;
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175 | function spawn(
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176 | command: string,
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177 | options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioPipe>,
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178 | ): ChildProcessByStdio<Writable, null, Readable>;
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179 | function spawn(
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180 | command: string,
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181 | options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioPipe>,
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182 | ): ChildProcessByStdio<null, Readable, Readable>;
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183 | function spawn(
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184 | command: string,
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185 | options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioNull>,
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186 | ): ChildProcessByStdio<Writable, null, null>;
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187 | function spawn(
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188 | command: string,
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189 | options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioNull>,
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190 | ): ChildProcessByStdio<null, Readable, null>;
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191 | function spawn(
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192 | command: string,
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193 | options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioPipe>,
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194 | ): ChildProcessByStdio<null, null, Readable>;
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195 | function spawn(
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196 | command: string,
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197 | options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioNull>,
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198 | ): ChildProcessByStdio<null, null, null>;
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199 |
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200 | function spawn(command: string, options: SpawnOptions): ChildProcess;
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201 |
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202 |
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203 | function spawn(command: string, args?: ReadonlyArray<string>, options?: SpawnOptionsWithoutStdio): ChildProcessWithoutNullStreams;
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204 |
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205 | function spawn(
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206 | command: string,
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207 | args: ReadonlyArray<string>,
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208 | options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioPipe>,
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209 | ): ChildProcessByStdio<Writable, Readable, Readable>;
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210 | function spawn(
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211 | command: string,
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212 | args: ReadonlyArray<string>,
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213 | options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioNull>,
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214 | ): ChildProcessByStdio<Writable, Readable, null>;
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215 | function spawn(
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216 | command: string,
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217 | args: ReadonlyArray<string>,
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218 | options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioPipe>,
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219 | ): ChildProcessByStdio<Writable, null, Readable>;
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220 | function spawn(
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221 | command: string,
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222 | args: ReadonlyArray<string>,
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223 | options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioPipe>,
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224 | ): ChildProcessByStdio<null, Readable, Readable>;
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225 | function spawn(
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226 | command: string,
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227 | args: ReadonlyArray<string>,
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228 | options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioNull>,
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229 | ): ChildProcessByStdio<Writable, null, null>;
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230 | function spawn(
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231 | command: string,
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232 | args: ReadonlyArray<string>,
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233 | options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioNull>,
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234 | ): ChildProcessByStdio<null, Readable, null>;
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235 | function spawn(
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236 | command: string,
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237 | args: ReadonlyArray<string>,
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238 | options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioPipe>,
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239 | ): ChildProcessByStdio<null, null, Readable>;
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240 | function spawn(
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241 | command: string,
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242 | args: ReadonlyArray<string>,
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243 | options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioNull>,
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244 | ): ChildProcessByStdio<null, null, null>;
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245 |
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246 | function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptions): ChildProcess;
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247 |
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248 | interface ExecOptions extends CommonOptions {
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249 | shell?: string | undefined;
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250 | maxBuffer?: number | undefined;
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251 | killSignal?: NodeJS.Signals | number | undefined;
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252 | }
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253 |
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254 | interface ExecOptionsWithStringEncoding extends ExecOptions {
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255 | encoding: BufferEncoding;
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256 | }
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257 |
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258 | interface ExecOptionsWithBufferEncoding extends ExecOptions {
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259 | encoding: string | null;
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260 | }
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261 |
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262 | interface ExecException extends Error {
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263 | cmd?: string | undefined;
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264 | killed?: boolean | undefined;
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265 | code?: number | undefined;
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266 | signal?: NodeJS.Signals | undefined;
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267 | }
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268 |
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269 |
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270 | function exec(command: string, callback?: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
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271 |
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272 |
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273 | function exec(command: string, options: { encoding: "buffer" | null } & ExecOptions, callback?: (error: ExecException | null, stdout: Buffer, stderr: Buffer) => void): ChildProcess;
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274 |
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275 |
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276 | function exec(command: string, options: { encoding: BufferEncoding } & ExecOptions, callback?: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
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277 |
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278 |
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279 |
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280 | function exec(command: string, options: { encoding: string } & ExecOptions, callback?: (error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void): ChildProcess;
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281 |
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282 |
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283 | function exec(command: string, options: ExecOptions, callback?: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
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284 |
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285 |
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286 | function exec(
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287 | command: string,
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288 | options: ({ encoding?: string | null | undefined } & ExecOptions) | undefined | null,
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289 | callback?: (error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void,
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290 | ): ChildProcess;
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291 |
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292 | interface PromiseWithChild<T> extends Promise<T> {
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293 | child: ChildProcess;
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294 | }
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295 |
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296 |
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297 | namespace exec {
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298 | function __promisify__(command: string): PromiseWithChild<{ stdout: string, stderr: string }>;
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299 | function __promisify__(command: string, options: { encoding: "buffer" | null } & ExecOptions): PromiseWithChild<{ stdout: Buffer, stderr: Buffer }>;
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300 | function __promisify__(command: string, options: { encoding: BufferEncoding } & ExecOptions): PromiseWithChild<{ stdout: string, stderr: string }>;
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301 | function __promisify__(command: string, options: ExecOptions): PromiseWithChild<{ stdout: string, stderr: string }>;
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302 | function __promisify__(command: string, options?: ({ encoding?: string | null | undefined } & ExecOptions) | null): PromiseWithChild<{ stdout: string | Buffer, stderr: string | Buffer }>;
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303 | }
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304 |
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305 | interface ExecFileOptions extends CommonOptions {
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306 | maxBuffer?: number | undefined;
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307 | killSignal?: NodeJS.Signals | number | undefined;
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308 | windowsVerbatimArguments?: boolean | undefined;
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309 | shell?: boolean | string | undefined;
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310 | }
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311 | interface ExecFileOptionsWithStringEncoding extends ExecFileOptions {
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312 | encoding: BufferEncoding;
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313 | }
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314 | interface ExecFileOptionsWithBufferEncoding extends ExecFileOptions {
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315 | encoding: 'buffer' | null;
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316 | }
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317 | interface ExecFileOptionsWithOtherEncoding extends ExecFileOptions {
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318 | encoding: string;
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319 | }
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320 |
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321 | function execFile(file: string): ChildProcess;
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322 | function execFile(file: string, options: ({ encoding?: string | null | undefined } & ExecFileOptions) | undefined | null): ChildProcess;
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323 | function execFile(file: string, args?: ReadonlyArray<string> | null): ChildProcess;
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324 | function execFile(file: string, args: ReadonlyArray<string> | undefined | null, options: ({ encoding?: string | null | undefined } & ExecFileOptions) | undefined | null): ChildProcess;
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325 |
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326 |
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327 | function execFile(file: string, callback: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
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328 | function execFile(file: string, args: ReadonlyArray<string> | undefined | null, callback: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
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329 |
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330 |
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331 | function execFile(file: string, options: ExecFileOptionsWithBufferEncoding, callback: (error: ExecException | null, stdout: Buffer, stderr: Buffer) => void): ChildProcess;
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332 | function execFile(
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333 | file: string,
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334 | args: ReadonlyArray<string> | undefined | null,
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335 | options: ExecFileOptionsWithBufferEncoding,
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336 | callback: (error: ExecException | null, stdout: Buffer, stderr: Buffer) => void,
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337 | ): ChildProcess;
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338 |
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339 |
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340 | function execFile(file: string, options: ExecFileOptionsWithStringEncoding, callback: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
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341 | function execFile(
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342 | file: string,
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343 | args: ReadonlyArray<string> | undefined | null,
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344 | options: ExecFileOptionsWithStringEncoding,
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345 | callback: (error: ExecException | null, stdout: string, stderr: string) => void,
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346 | ): ChildProcess;
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347 |
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348 |
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349 |
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350 | function execFile(
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351 | file: string,
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352 | options: ExecFileOptionsWithOtherEncoding,
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353 | callback: (error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void,
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354 | ): ChildProcess;
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355 | function execFile(
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356 | file: string,
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357 | args: ReadonlyArray<string> | undefined | null,
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358 | options: ExecFileOptionsWithOtherEncoding,
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359 | callback: (error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void,
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360 | ): ChildProcess;
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361 |
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362 |
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363 | function execFile(file: string, options: ExecFileOptions, callback: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
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364 | function execFile(
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365 | file: string,
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366 | args: ReadonlyArray<string> | undefined | null,
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367 | options: ExecFileOptions,
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368 | callback: (error: ExecException | null, stdout: string, stderr: string) => void
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369 | ): ChildProcess;
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370 |
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371 |
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372 | function execFile(
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373 | file: string,
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374 | options: ({ encoding?: string | null | undefined } & ExecFileOptions) | undefined | null,
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375 | callback: ((error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void) | undefined | null,
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376 | ): ChildProcess;
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377 | function execFile(
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378 | file: string,
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379 | args: ReadonlyArray<string> | undefined | null,
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380 | options: ({ encoding?: string | null | undefined } & ExecFileOptions) | undefined | null,
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381 | callback: ((error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void) | undefined | null,
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382 | ): ChildProcess;
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383 |
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384 |
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385 | namespace execFile {
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386 | function __promisify__(file: string): PromiseWithChild<{ stdout: string, stderr: string }>;
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387 | function __promisify__(file: string, args: ReadonlyArray<string> | undefined | null): PromiseWithChild<{ stdout: string, stderr: string }>;
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388 | function __promisify__(file: string, options: ExecFileOptionsWithBufferEncoding): PromiseWithChild<{ stdout: Buffer, stderr: Buffer }>;
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389 | function __promisify__(file: string, args: ReadonlyArray<string> | undefined | null, options: ExecFileOptionsWithBufferEncoding): PromiseWithChild<{ stdout: Buffer, stderr: Buffer }>;
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390 | function __promisify__(file: string, options: ExecFileOptionsWithStringEncoding): PromiseWithChild<{ stdout: string, stderr: string }>;
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391 | function __promisify__(file: string, args: ReadonlyArray<string> | undefined | null, options: ExecFileOptionsWithStringEncoding): PromiseWithChild<{ stdout: string, stderr: string }>;
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392 | function __promisify__(file: string, options: ExecFileOptionsWithOtherEncoding): PromiseWithChild<{ stdout: string | Buffer, stderr: string | Buffer }>;
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393 | function __promisify__(
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394 | file: string,
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395 | args: ReadonlyArray<string> | undefined | null,
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396 | options: ExecFileOptionsWithOtherEncoding,
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397 | ): PromiseWithChild<{ stdout: string | Buffer, stderr: string | Buffer }>;
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398 | function __promisify__(file: string, options: ExecFileOptions): PromiseWithChild<{ stdout: string, stderr: string }>;
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399 | function __promisify__(file: string, args: ReadonlyArray<string> | undefined | null, options: ExecFileOptions): PromiseWithChild<{ stdout: string, stderr: string }>;
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400 | function __promisify__(
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401 | file: string,
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402 | options: ({ encoding?: string | null | undefined } & ExecFileOptions) | undefined | null
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403 | ): PromiseWithChild<{ stdout: string | Buffer, stderr: string | Buffer }>;
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404 | function __promisify__(
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405 | file: string,
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406 | args: ReadonlyArray<string> | undefined | null,
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407 | options: ({ encoding?: string | null | undefined } & ExecFileOptions) | undefined | null,
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408 | ): PromiseWithChild<{ stdout: string | Buffer, stderr: string | Buffer }>;
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409 | }
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410 |
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411 | interface ForkOptions extends ProcessEnvOptions {
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412 | execPath?: string | undefined;
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413 | execArgv?: string[] | undefined;
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414 | silent?: boolean | undefined;
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415 | stdio?: StdioOptions | undefined;
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416 | detached?: boolean | undefined;
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417 | windowsVerbatimArguments?: boolean | undefined;
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418 | }
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419 | function fork(modulePath: string, options?: ForkOptions): ChildProcess;
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420 | function fork(modulePath: string, args?: ReadonlyArray<string>, options?: ForkOptions): ChildProcess;
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421 |
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422 | interface SpawnSyncOptions extends CommonOptions {
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423 | argv0?: string | undefined;
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424 | input?: string | NodeJS.ArrayBufferView | undefined;
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425 | stdio?: StdioOptions | undefined;
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426 | killSignal?: NodeJS.Signals | number | undefined;
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427 | maxBuffer?: number | undefined;
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428 | encoding?: string | undefined;
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429 | shell?: boolean | string | undefined;
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430 | windowsVerbatimArguments?: boolean | undefined;
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431 | }
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432 | interface SpawnSyncOptionsWithStringEncoding extends SpawnSyncOptions {
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433 | encoding: BufferEncoding;
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434 | }
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435 | interface SpawnSyncOptionsWithBufferEncoding extends SpawnSyncOptions {
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436 | encoding: string;
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437 | }
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438 | interface SpawnSyncReturns<T> {
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439 | pid: number;
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440 | output: Array<T | null>;
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441 | stdout: T;
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442 | stderr: T;
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443 | status: number | null;
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444 | signal: NodeJS.Signals | null;
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445 | error?: Error | undefined;
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446 | }
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447 | function spawnSync(command: string): SpawnSyncReturns<Buffer>;
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448 | function spawnSync(command: string, options: SpawnSyncOptionsWithStringEncoding): SpawnSyncReturns<string>;
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449 | function spawnSync(command: string, options: SpawnSyncOptionsWithBufferEncoding): SpawnSyncReturns<Buffer>;
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450 | function spawnSync(command: string, options?: SpawnSyncOptions): SpawnSyncReturns<string | Buffer>;
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451 | function spawnSync(command: string, args: ReadonlyArray<string>): SpawnSyncReturns<Buffer>;
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452 | function spawnSync(command: string, args: ReadonlyArray<string>, options: SpawnSyncOptionsWithStringEncoding): SpawnSyncReturns<string>;
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453 | function spawnSync(command: string, args: ReadonlyArray<string>, options: SpawnSyncOptionsWithBufferEncoding): SpawnSyncReturns<Buffer>;
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454 | function spawnSync(command: string, args?: ReadonlyArray<string>, options?: SpawnSyncOptions): SpawnSyncReturns<string | Buffer>;
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455 |
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456 | interface ExecSyncOptions extends CommonOptions {
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457 | input?: string | Uint8Array | undefined;
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458 | stdio?: StdioOptions | undefined;
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459 | shell?: string | undefined;
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460 | killSignal?: NodeJS.Signals | number | undefined;
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461 | maxBuffer?: number | undefined;
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462 | encoding?: string | undefined;
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463 | }
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464 | interface ExecSyncOptionsWithStringEncoding extends ExecSyncOptions {
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465 | encoding: BufferEncoding;
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466 | }
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467 | interface ExecSyncOptionsWithBufferEncoding extends ExecSyncOptions {
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468 | encoding: string;
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469 | }
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470 | function execSync(command: string): Buffer;
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471 | function execSync(command: string, options: ExecSyncOptionsWithStringEncoding): string;
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472 | function execSync(command: string, options: ExecSyncOptionsWithBufferEncoding): Buffer;
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473 | function execSync(command: string, options?: ExecSyncOptions): string | Buffer;
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474 |
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475 | interface ExecFileSyncOptions extends CommonOptions {
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476 | input?: string | NodeJS.ArrayBufferView | undefined;
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477 | stdio?: StdioOptions | undefined;
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478 | killSignal?: NodeJS.Signals | number | undefined;
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479 | maxBuffer?: number | undefined;
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480 | encoding?: string | undefined;
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481 | shell?: boolean | string | undefined;
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482 | }
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483 | interface ExecFileSyncOptionsWithStringEncoding extends ExecFileSyncOptions {
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484 | encoding: BufferEncoding;
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485 | }
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486 | interface ExecFileSyncOptionsWithBufferEncoding extends ExecFileSyncOptions {
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487 | encoding: string;
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488 | }
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489 | function execFileSync(command: string): Buffer;
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490 | function execFileSync(command: string, options: ExecFileSyncOptionsWithStringEncoding): string;
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491 | function execFileSync(command: string, options: ExecFileSyncOptionsWithBufferEncoding): Buffer;
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492 | function execFileSync(command: string, options?: ExecFileSyncOptions): string | Buffer;
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493 | function execFileSync(command: string, args: ReadonlyArray<string>): Buffer;
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494 | function execFileSync(command: string, args: ReadonlyArray<string>, options: ExecFileSyncOptionsWithStringEncoding): string;
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495 | function execFileSync(command: string, args: ReadonlyArray<string>, options: ExecFileSyncOptionsWithBufferEncoding): Buffer;
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496 | function execFileSync(command: string, args?: ReadonlyArray<string>, options?: ExecFileSyncOptions): string | Buffer;
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497 | }
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