fast-check
Version:
Property based testing framework for JavaScript (like QuickCheck)
24 lines (23 loc) • 880 B
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.indexToCharStringMapper = void 0;
exports.indexToCharStringUnmapper = indexToCharStringUnmapper;
const globals_1 = require("../../../utils/globals");
exports.indexToCharStringMapper = String.fromCodePoint;
function indexToCharStringUnmapper(c) {
if (typeof c !== 'string') {
throw new Error('Cannot unmap non-string');
}
if (c.length === 0 || c.length > 2) {
throw new Error('Cannot unmap string with more or less than one character');
}
const c1 = (0, globals_1.safeCharCodeAt)(c, 0);
if (c.length === 1) {
return c1;
}
const c2 = (0, globals_1.safeCharCodeAt)(c, 1);
if (c1 < 0xd800 || c1 > 0xdbff || c2 < 0xdc00 || c2 > 0xdfff) {
throw new Error('Cannot unmap invalid surrogate pairs');
}
return c.codePointAt(0);
}