| "use strict"; |
| |
| // Always use the latest available version of Unicode! |
| // https://tc39.github.io/ecma262/#sec-conformance |
| const version = "13.0.0"; |
| |
| const start = require("unicode-" + |
| version + |
| "/Binary_Property/ID_Start/code-points.js").filter(function (ch) { |
| return ch > 0x7f; |
| }); |
| let last = -1; |
| const cont = [0x200c, 0x200d].concat( |
| require("unicode-" + |
| version + |
| "/Binary_Property/ID_Continue/code-points.js").filter(function (ch) { |
| return ch > 0x7f && search(start, ch, last + 1) == -1; |
| }) |
| ); |
| |
| function search(arr, ch, starting) { |
| for (let i = starting; arr[i] <= ch && i < arr.length; last = i++) { |
| if (arr[i] === ch) return i; |
| } |
| return -1; |
| } |
| |
| function pad(str, width) { |
| while (str.length < width) str = "0" + str; |
| return str; |
| } |
| |
| function esc(code) { |
| const hex = code.toString(16); |
| if (hex.length <= 2) return "\\x" + pad(hex, 2); |
| else return "\\u" + pad(hex, 4); |
| } |
| |
| function generate(chars) { |
| const astral = []; |
| let re = ""; |
| for (let i = 0, at = 0x10000; i < chars.length; i++) { |
| const from = chars[i]; |
| let to = from; |
| while (i < chars.length - 1 && chars[i + 1] == to + 1) { |
| i++; |
| to++; |
| } |
| if (to <= 0xffff) { |
| if (from == to) re += esc(from); |
| else if (from + 1 == to) re += esc(from) + esc(to); |
| else re += esc(from) + "-" + esc(to); |
| } else { |
| astral.push(from - at, to - from); |
| at = to; |
| } |
| } |
| return { nonASCII: re, astral: astral }; |
| } |
| |
| const startData = generate(start); |
| const contData = generate(cont); |
| |
| console.log("/* prettier-ignore */"); |
| console.log('let nonASCIIidentifierStartChars = "' + startData.nonASCII + '";'); |
| console.log("/* prettier-ignore */"); |
| console.log('let nonASCIIidentifierChars = "' + contData.nonASCII + '";'); |
| console.log("/* prettier-ignore */"); |
| console.log( |
| "const astralIdentifierStartCodes = " + JSON.stringify(startData.astral) + ";" |
| ); |
| console.log("/* prettier-ignore */"); |
| console.log( |
| "const astralIdentifierCodes = " + JSON.stringify(contData.astral) + ";" |
| ); |