codekingpro/portable-devtools

1// This is JUST the code needed to open a package.json file and parse it.
2// It's isolated out so that code needing to parse a package.json file can do so in the same way as this module does, without needing to require the whole module, or needing to require the underlying parsing library.
3
4const { readFile } = require('fs/promises')
5const parseJSON = require('json-parse-even-better-errors')
6
7async function read (filename) {
8  try {
9    const data = await readFile(filename, 'utf8')
10    return data
11  } catch (err) {
12    err.message = `Could not read package.json: ${err}`
13    throw err
14  }
15}
16
17function parse (data) {
18  try {
19    const content = parseJSON(data)
20    return content
21  } catch (err) {
22    err.message = `Invalid package.json: ${err}`
23    throw err
24  }
25}
26
27// This is what most external libs will use.
28// PackageJson will call read and parse separately
29async function readPackage (filename) {
30  const data = await read(filename)
31  const content = parse(data)
32  return content
33}
34
35module.exports = {
36  read,
37  parse,
38  readPackage,
39}
40