1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
// Utility functions which are only relevant to particular Node.js constructs.
import {readdir} from 'fs/promises';
import {fileURLToPath} from 'url';
import * as path from 'path';
import _commandExists from 'command-exists';
// This package throws an error instead of returning false when the command
// doesn't exist, for some reason. Yay for making logic more difficult!
// Here's a straightforward workaround.
export function commandExists(command) {
return _commandExists(command).then(
() => true,
() => false
);
}
// Very cool function origin8ting in... http-music pro8a8ly!
// Sorry if we happen to 8e violating past-us's copyright, lmao.
export function promisifyProcess(proc, showLogging = true) {
// Takes a process (from the child_process module) and returns a promise
// that resolves when the process exits (or rejects, if the exit code is
// non-zero).
//
// Ayy look, no alpha8etical second letter! Couldn't tell this was written
// like three years ago 8efore I was me. 8888)
return new Promise((resolve, reject) => {
if (showLogging) {
proc.stdout.pipe(process.stdout);
proc.stderr.pipe(process.stderr);
}
proc.on('exit', (code) => {
if (code === 0) {
resolve();
} else {
reject(code);
}
});
});
}
// Handy-dandy utility function for detecting whether the passed URL is the
// running JavaScript file. This takes `import.meta.url` from ES6 modules, which
// is great 'cuz (module === require.main) doesn't work without CommonJS
// modules.
export function isMain(importMetaURL) {
const metaPath = fileURLToPath(importMetaURL);
const relative = path.relative(process.argv[1], metaPath);
const isIndexJS = path.basename(metaPath) === 'index.js';
return [
'',
isIndexJS && 'index.js'
].includes(relative);
}
// Like readdir... but it's recursive!
export function traverse(startDirPath, {
filterFile = () => true,
filterDir = () => true
} = {}) {
const recursive = (names, subDirPath) =>
Promise.all(
names.map((name) =>
readdir(path.join(startDirPath, subDirPath, name)).then(
(names) =>
filterDir(name)
? recursive(names, path.join(subDirPath, name))
: [],
() => (filterFile(name) ? [path.join(subDirPath, name)] : [])
)
)
).then((pathArrays) => pathArrays.flatMap((x) => x));
return readdir(startDirPath).then((names) => recursive(names, ''));
}
|
