To help you get started, we've collected the most common ways that parse-json is being used within popular public projects.

mikelambert / dancedeets-monorepo / common / scripts / checkTutorials.js View on Github

async function checkAllTutorials() {
  const files = (await fs.walk('../js/tutorials/playlists')).map(x => x.path);
  const jsonFiles = files.filter(x => x.endsWith('.json'));
  const promises = [];
  const tutorials = [];
  for (const jsonFilename of jsonFiles) {
    let jsonData = null;
    try {
      jsonData = parseJson(await fs.readFile(jsonFilename));
      tutorials.push(jsonData);
    } catch (e) {
      console.error('Error loading ', jsonFilename, '\n', e);
      continue;
    }
    promises.push(reportAndFix(jsonFilename, jsonData));
  }
  await Promise.all(promises);

  // Used for testing down below
  let defaultTutorials = null;
  try {
    defaultTutorials = require('../js/tutorials/playlistConfig.js').getTutorials(
      ''
    );
  } catch (e) {

View more ways to use parse-json

parse-json

Parse JSON with more helpful errors

Install

npm install parse-json

Usage

import parseJson, {JSONError} from 'parse-json';

const json = '{\n\t"foo": true,\n}';


JSON.parse(json);
/*
undefined:3
}
^
SyntaxError: Unexpected token }
*/


parseJson(json);
/*
JSONError: Unexpected token } in JSON at position 16 while parsing near '{      "foo": true,}'

  1 | {
  2 |   "foo": true,
> 3 | }
    | ^
*/


parseJson(json, 'foo.json');
/*
JSONError: Unexpected token } in JSON at position 16 while parsing near '{      "foo": true,}' in foo.json

  1 | {
  2 |   "foo": true,
> 3 | }
    | ^
*/


// You can also add the filename at a later point
try {
	parseJson(json);
} catch (error) {
	if (error instanceof JSONError) {
		error.fileName = 'foo.json';
	}

	throw error;
}
/*
JSONError: Unexpected token } in JSON at position 16 while parsing near '{      "foo": true,}' in foo.json

  1 | {
  2 |   "foo": true,
> 3 | }
    | ^
*/

API

parseJson(string, reviver?, filename?)

Throws a JSONError when there is a parsing error.

string

Type: string

reviver

Type: Function

Prescribes how the value originally produced by parsing is transformed, before being returned. See JSON.parse docs for more.

filename

Type: string

The filename displayed in the error message.

JSONError

Exposed for instanceof checking.

fileName

Type: string

The filename displayed in the error message.

codeFrame

Type: string

The printable section of the JSON which produces the error.

rawCodeFrame

Type: string

The raw version of codeFrame without colors.