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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
export function notImplemented(msg?: string): never {
const message = msg ? `Not implemented: ${msg}` : "Not implemented";
throw new Error(message);
}
export type _TextDecoder = typeof TextDecoder.prototype;
export const _TextDecoder = TextDecoder;
export type _TextEncoder = typeof TextEncoder.prototype;
export const _TextEncoder = TextEncoder;
// API helpers
export type MaybeNull<T> = T | null;
export type MaybeDefined<T> = T | undefined;
export type MaybeEmpty<T> = T | null | undefined;
export function intoCallbackAPI<T>(
// eslint-disable-next-line @typescript-eslint/no-explicit-any
func: (...args: any[]) => Promise<T>,
cb: MaybeEmpty<(err: MaybeNull<Error>, value: MaybeEmpty<T>) => void>,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
...args: any[]
): void {
func(...args)
.then((value) => cb && cb(null, value))
.catch((err) => cb && cb(err, null));
}
export function intoCallbackAPIWithIntercept<T1, T2>(
// eslint-disable-next-line @typescript-eslint/no-explicit-any
func: (...args: any[]) => Promise<T1>,
interceptor: (v: T1) => T2,
cb: MaybeEmpty<(err: MaybeNull<Error>, value: MaybeEmpty<T2>) => void>,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
...args: any[]
): void {
func(...args)
.then((value) => cb && cb(null, interceptor(value)))
.catch((err) => cb && cb(err, null));
}
export function spliceOne(list: string[], index: number): void {
for (; index + 1 < list.length; index++) list[index] = list[index + 1];
list.pop();
}
// Taken from: https://github.com/nodejs/node/blob/ba684805b6c0eded76e5cd89ee00328ac7a59365/lib/internal/util.js#L125
// Return undefined if there is no match.
// Move the "slow cases" to a separate function to make sure this function gets
// inlined properly. That prioritizes the common case.
export function normalizeEncoding(enc: string | null): string | undefined {
if (enc == null || enc === "utf8" || enc === "utf-8") return "utf8";
return slowCases(enc);
}
// https://github.com/nodejs/node/blob/ba684805b6c0eded76e5cd89ee00328ac7a59365/lib/internal/util.js#L130
function slowCases(enc: string): string | undefined {
switch (enc.length) {
case 4:
if (enc === "UTF8") return "utf8";
if (enc === "ucs2" || enc === "UCS2") return "utf16le";
enc = `${enc}`.toLowerCase();
if (enc === "utf8") return "utf8";
if (enc === "ucs2") return "utf16le";
break;
case 3:
if (enc === "hex" || enc === "HEX" || `${enc}`.toLowerCase() === "hex") {
return "hex";
}
break;
case 5:
if (enc === "ascii") return "ascii";
if (enc === "ucs-2") return "utf16le";
if (enc === "UTF-8") return "utf8";
if (enc === "ASCII") return "ascii";
if (enc === "UCS-2") return "utf16le";
enc = `${enc}`.toLowerCase();
if (enc === "utf-8") return "utf8";
if (enc === "ascii") return "ascii";
if (enc === "ucs-2") return "utf16le";
break;
case 6:
if (enc === "base64") return "base64";
if (enc === "latin1" || enc === "binary") return "latin1";
if (enc === "BASE64") return "base64";
if (enc === "LATIN1" || enc === "BINARY") return "latin1";
enc = `${enc}`.toLowerCase();
if (enc === "base64") return "base64";
if (enc === "latin1" || enc === "binary") return "latin1";
break;
case 7:
if (
enc === "utf16le" ||
enc === "UTF16LE" ||
`${enc}`.toLowerCase() === "utf16le"
) {
return "utf16le";
}
break;
case 8:
if (
enc === "utf-16le" ||
enc === "UTF-16LE" ||
`${enc}`.toLowerCase() === "utf-16le"
) {
return "utf16le";
}
break;
default:
if (enc === "") return "utf8";
}
}
|
