codekingpro/portable-devtools

1const { log } = require('proc-log')
2const fs = require('node:fs')
3const { dirname } = require('node:path')
4const os = require('node:os')
5const { inspect, format } = require('node:util')
6
7const { bin: options } = require('./options.js')
8
9// add a meta method to proc-log for passing optional
10// metadata through to log handlers
11const META = Symbol('meta')
12const parseArgs = (...args) => {
13  const { [META]: isMeta } = args[args.length - 1] || {}
14  return isMeta
15    ? [args[args.length - 1], ...args.slice(0, args.length - 1)]
16    : [{}, ...args]
17}
18log.meta = (meta = {}) => ({ [META]: true, ...meta })
19
20const levels = new Map([
21  'silly',
22  'verbose',
23  'info',
24  'http',
25  'notice',
26  'warn',
27  'error',
28  'silent',
29].map((level, index) => [level, index]))
30
31const addLogListener = (write, { eol = os.EOL, loglevel = 'silly', colors = false } = {}) => {
32  const levelIndex = levels.get(loglevel)
33
34  const magenta = m => colors ? `\x1B[35m${m}\x1B[39m` : m
35  const dim = m => colors ? `\x1B[2m${m}\x1B[22m` : m
36  const red = m => colors ? `\x1B[31m${m}\x1B[39m` : m
37
38  const formatter = (level, ...args) => {
39    const depth = level === 'error' && args[0] && args[0].code === 'ERESOLVE' ? Infinity : 10
40
41    if (level === 'info' && args[0] === 'timeEnd') {
42      args[1] = dim(args[1])
43    } else if (level === 'error' && args[0] === 'timeError') {
44      args[1] = red(args[1])
45    }
46
47    const messages = args.map(a => typeof a === 'string' ? a : inspect(a, { depth, colors }))
48    const pref = `${process.pid} ${magenta(level)} `
49
50    return pref + format(...messages).trim().split('\n').join(`${eol}${pref}`) + eol
51  }
52
53  process.on('log', (...args) => {
54    const [meta, level, ...logArgs] = parseArgs(...args)
55
56    if (levelIndex <= levels.get(level) || meta.force) {
57      write(formatter(level, ...logArgs))
58    }
59  })
60}
61
62if (options.loglevel !== 'silent') {
63  addLogListener((v) => process.stderr.write(v), {
64    eol: '\n',
65    colors: options.colors,
66    loglevel: options.loglevel,
67  })
68}
69
70if (options.logfile) {
71  log.silly('logfile', options.logfile)
72  fs.mkdirSync(dirname(options.logfile), { recursive: true })
73  const fd = fs.openSync(options.logfile, 'a')
74  addLogListener((str) => fs.writeSync(fd, str))
75}
76
77module.exports = log
78