Sha256: 32fba1281a9e5cfef53753c9d2095c68e8bf149e279afa7532d46973d355220a
Contents?: true
Size: 1.96 KB
Versions: 17
Compression:
Stored size: 1.96 KB
Contents
"use strict";
// Always use the latest available version of Unicode!
// https://tc39.github.io/ecma262/#sec-conformance
const version = "15.1.0";
const start = require(
"@unicode/unicode-" + version + "/Binary_Property/ID_Start/code-points.js"
).filter(function (ch) {
return ch > 0x7f;
});
let last = -1;
const cont = require(
"@unicode/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) + ";"
);
Version data entries
17 entries across 17 versions & 3 rubygems