source: trip-planner-front/node_modules/parse-json/index.js@ 1ad8e64

'use strict';
const errorEx = require('error-ex');
const fallback = require('json-parse-even-better-errors');
const {default: LinesAndColumns} = require('lines-and-columns');
const {codeFrameColumns} = require('@babel/code-frame');

const JSONError = errorEx('JSONError', {
        fileName: errorEx.append('in %s'),
        codeFrame: errorEx.append('\n\n%s\n')
});

const parseJson = (string, reviver, filename) => {
        if (typeof reviver === 'string') {
                filename = reviver;
                reviver = null;
        }

        try {
                try {
                        return JSON.parse(string, reviver);
                } catch (error) {
                        fallback(string, reviver);
                        throw error;
                }
        } catch (error) {
                error.message = error.message.replace(/\n/g, '');
                const indexMatch = error.message.match(/in JSON at position (\d+) while parsing/);

                const jsonError = new JSONError(error);
                if (filename) {
                        jsonError.fileName = filename;
                }

                if (indexMatch && indexMatch.length > 0) {
                        const lines = new LinesAndColumns(string);
                        const index = Number(indexMatch[1]);
                        const location = lines.locationForIndex(index);

                        const codeFrame = codeFrameColumns(
                                string,
                                {start: {line: location.line + 1, column: location.column + 1}},
                                {highlightCode: true}
                        );

                        jsonError.codeFrame = codeFrame;
                }

                throw jsonError;
        }
};

parseJson.JSONError = JSONError;

module.exports = parseJson;