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chatwine-korean
/
vivino-api
/node_modules
/@babel
/helper-validator-identifier
/scripts
/generate-identifier-regex.js
; | |
// 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) + ";" | |
); | |