| /* | |
| * Portions of this file are derived from: | |
| * - ansi-regex (https://github.com/chalk/ansi-regex) | |
| * - strip-ansi (https://github.com/chalk/strip-ansi) | |
| * | |
| * MIT License | |
| * | |
| * Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com) | |
| * | |
| * Permission is hereby granted, free of charge, to any person obtaining a copy | |
| * of this software and associated documentation files (the "Software"), to deal | |
| * in the Software without restriction, including without limitation the rights | |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| * copies of the Software, and to permit persons to whom the Software is | |
| * furnished to do so, subject to the following conditions: | |
| * | |
| * The above copyright notice and this permission notice shall be included in all | |
| * copies or substantial portions of the Software. | |
| * | |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
| * SOFTWARE. | |
| */ | |
| function ansiRegex({ onlyFirst = false }: { onlyFirst?: boolean } = {}): RegExp { | |
| // Valid string terminator sequences are BEL, ESC\, and 0x9c | |
| const ST = "(?:\\u0007|\\u001B\\u005C|\\u009C)"; | |
| // OSC sequences only: ESC ] ... ST (non-greedy until the first ST) | |
| const osc = `(?:\\u001B\\][\\s\\S]*?${ST})`; | |
| // CSI and related: ESC/C1, optional intermediates, optional params (supports ; and :) then final byte | |
| const csi = "[\\u001B\\u009B][[\\]()#;?]*(?:\\d{1,4}(?:[;:]\\d{0,4})*)?[\\dA-PR-TZcf-nq-uy=><~]"; | |
| const pattern = `${osc}|${csi}`; | |
| return new RegExp(pattern, onlyFirst ? undefined : "g"); | |
| } | |
| const regex = ansiRegex(); | |
| export function stripAnsi(value: string): string { | |
| if (typeof value !== "string") { | |
| throw new TypeError(`Expected a \`string\`, got \`${typeof value}\``); | |
| } | |
| // Fast path: ANSI codes require ESC (7-bit) or CSI (8-bit) introducer | |
| if (!value.includes("\u001B") && !value.includes("\u009B")) { | |
| return value; | |
| } | |
| // Even though the regex is global, we don't need to reset the `.lastIndex` | |
| // because unlike `.exec()` and `.test()`, `.replace()` does it automatically | |
| // and doing it manually has a performance penalty. | |
| return value.replace(regex, ""); | |
| } | |