fast-check
Version:
Property based testing framework for JavaScript (like QuickCheck)
32 lines (31 loc) • 1.01 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.stringToBase64Mapper = stringToBase64Mapper;
exports.stringToBase64Unmapper = stringToBase64Unmapper;
const globals_1 = require("../../../utils/globals");
function stringToBase64Mapper(s) {
switch (s.length % 4) {
case 0:
return s;
case 3:
return `${s}=`;
case 2:
return `${s}==`;
default:
return (0, globals_1.safeSubstring)(s, 1);
}
}
function stringToBase64Unmapper(value) {
if (typeof value !== 'string' || value.length % 4 !== 0) {
throw new Error('Invalid string received');
}
const lastTrailingIndex = value.indexOf('=');
if (lastTrailingIndex === -1) {
return value;
}
const numTrailings = value.length - lastTrailingIndex;
if (numTrailings > 2) {
throw new Error('Cannot unmap the passed value');
}
return (0, globals_1.safeSubstring)(value, 0, lastTrailingIndex);
}