responsive-loader/lib/parseQuery.js

A webpack loader for responsive images

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseQuery = void 0;
const JSON5 = require("json5");
const specialValues = {
    null: null,
    true: true,
    false: false,
};
function parseQuery(query) {
    if (query.slice(0, 1) !== '?') {
        throw new Error("A valid query string passed to parseQuery should begin with '?'");
    }
    query = query.slice(1);
    if (!query) {
        return {};
    }
    if (query.slice(0, 1) === '{' && query.slice(-1) === '}') {
        query = decodeURIComponent(query);
        return JSON5.parse(query);
    }
    const queryArgs = query.split(/[,&]/g);
    const result = {};
    queryArgs.forEach((arg) => {
        const idx = arg.indexOf('=');
        if (idx >= 0) {
            let name = arg.slice(0, idx);
            let value = decodeURIComponent(arg.slice(idx + 1));
            // const specialValues: LooseObject = {}
            // eslint-disable-next-line no-prototype-builtins
            if (specialValues.hasOwnProperty(value)) {
                value = specialValues[value];
            }
            if (name.slice(-2) === '[]') {
                name = decodeURIComponent(name.slice(0, name.length - 2));
                if (!Array.isArray(result[name])) {
                    result[name] = [];
                }
                result[name].push(value);
            }
            else {
                name = decodeURIComponent(name);
                result[name] = value;
            }
        }
        else {
            if (arg.slice(0, 1) === '-') {
                result[decodeURIComponent(arg.slice(1))] = false;
            }
            else if (arg.slice(0, 1) === '+') {
                result[decodeURIComponent(arg.slice(1))] = true;
            }
            else {
                result[decodeURIComponent(arg)] = true;
            }
        }
    });
    return result;
}
exports.parseQuery = parseQuery;