rollup-plugin-sourcemaps2/dist/decode-uri-component.js

Rollup plugin for grabbing source maps from sourceMappingURLs

const token = '%[a-f0-9]{2}';
const singleMatcher = new RegExp(`(${token})|([^%]+?)`, 'gi');
const multiMatcher = new RegExp(`(${token})+`, 'gi');
function decodeComponents(components, split) {
    let splitAt = split;
    try {
        // Try to decode the entire string first
        return [
            decodeURIComponent(components.join(''))
        ];
    } catch  {
    // Do nothing
    }
    if (components.length === 1) {
        return components;
    }
    splitAt = splitAt ?? 1;
    // Split the array in 2 parts
    const left = components.slice(0, splitAt);
    const right = components.slice(splitAt);
    return Array.prototype.concat.call([], decodeComponents(left), decodeComponents(right));
}
function decode(input) {
    let localInput = input;
    try {
        return decodeURIComponent(localInput);
    } catch  {
        let tokens = RegExp(singleMatcher).exec(localInput) || [];
        for(let i = 1; i < tokens.length; i++){
            localInput = decodeComponents(tokens, i).join('');
            tokens = RegExp(singleMatcher).exec(localInput) || [];
        }
        return localInput;
    }
}
function customDecodeURIComponent(input) {
    let localInput = input;
    // Keep track of all the replacements and prefill the map with the `BOM`
    const replaceMap = {
        '%FE%FF': '\uFFFD\uFFFD',
        '%FF%FE': '\uFFFD\uFFFD'
    };
    let match = multiMatcher.exec(localInput);
    while(match){
        try {
            // Decode as big chunks as possible
            replaceMap[match[0]] = decodeURIComponent(match[0]);
        } catch  {
            const result = decode(match[0]);
            if (result !== match[0]) {
                replaceMap[match[0]] = result;
            }
        }
        match = multiMatcher.exec(localInput);
    }
    // Add `%C2` at the end of the map to make sure it does not replace the combinator before everything else
    replaceMap['%C2'] = '\uFFFD';
    const entries = Object.keys(replaceMap);
    for (const key of entries){
        // Replace all decoded components
        localInput = localInput.replace(new RegExp(key, 'g'), replaceMap[key]);
    }
    return localInput;
}
function decodeUriComponent(encodedURI) {
    if (typeof encodedURI !== 'string') {
        throw new TypeError(`Expected \`encodedURI\` to be of type \`string\`, got \`${typeof encodedURI}\``);
    }
    try {
        // Try the built in decoder first
        return decodeURIComponent(encodedURI);
    } catch  {
        // Fallback to a more advanced decoder
        return customDecodeURIComponent(encodedURI);
    }
}

export { decodeUriComponent as default };
//# sourceMappingURL=decode-uri-component.js.map