forked from microsoft/TypeScript
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathutil.ts
More file actions
112 lines (98 loc) · 4.7 KB
/
util.ts
File metadata and controls
112 lines (98 loc) · 4.7 KB
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
/**
* Common utilities
*/
namespace Utils {
const testPathPrefixRegExp = /(?:(file:\/{3})|\/)\.(ts|lib|src)\//g;
export function removeTestPathPrefixes(text: string, retainTrailingDirectorySeparator?: boolean): string {
return text !== undefined ? text.replace(testPathPrefixRegExp, (_, scheme) => scheme || (retainTrailingDirectorySeparator ? "/" : "")) : undefined!; // TODO: GH#18217
}
function createDiagnosticMessageReplacer<R extends (messageArgs: string[], ...args: string[]) => string[]>(diagnosticMessage: ts.DiagnosticMessage, replacer: R) {
const messageParts = diagnosticMessage.message.split(/{\d+}/g);
const regExp = new RegExp(`^(?:${messageParts.map(ts.regExpEscape).join("(.*?)")})$`);
type Args<R> = R extends (messageArgs: string[], ...args: infer A) => string[] ? A : [];
return (text: string, ...args: Args<R>) => text.replace(regExp, (_, ...fixedArgs) => ts.formatStringFromArgs(diagnosticMessage.message, replacer(fixedArgs, ...args)));
}
const replaceTypesVersionsMessage = createDiagnosticMessageReplacer(
ts.Diagnostics.package_json_has_a_typesVersions_entry_0_that_matches_compiler_version_1_looking_for_a_pattern_to_match_module_name_2,
([entry, , moduleName], compilerVersion) => [entry, compilerVersion, moduleName]);
export function sanitizeTraceResolutionLogEntry(text: string) {
return text && removeTestPathPrefixes(replaceTypesVersionsMessage(text, "3.1.0-dev"));
}
/**
* Removes leading indentation from a template literal string.
*/
export function dedent(array: TemplateStringsArray, ...args: any[]) {
let text = array[0];
for (let i = 0; i < args.length; i++) {
text += args[i];
text += array[i + 1];
}
const lineTerminatorRegExp = /\r\n?|\n/g;
const lines: string[] = [];
const lineTerminators: string[] = [];
let match: RegExpExecArray | null;
let lineStart = 0;
while (match = lineTerminatorRegExp.exec(text)) {
if (lineStart !== match.index || lines.length > 0) {
lines.push(text.slice(lineStart, match.index));
lineTerminators.push(match[0]);
}
lineStart = match.index + match[0].length;
}
if (lineStart < text.length) {
lines.push(text.slice(lineStart));
}
const indentation = guessIndentation(lines);
let result = "";
for (let i = 0; i < lines.length; i++) {
const lineText = lines[i];
const line = indentation ? lineText.slice(indentation) : lineText;
result += line;
if (i < lineTerminators.length) {
result += lineTerminators[i];
}
}
return result;
}
function guessIndentation(lines: string[]) {
let indentation: number | undefined;
for (const line of lines) {
for (let i = 0; i < line.length && (indentation === undefined || i < indentation); i++) {
if (!ts.isWhiteSpaceLike(line.charCodeAt(i))) {
if (indentation === undefined || i < indentation) {
indentation = i;
break;
}
}
}
}
return indentation;
}
export function getByteOrderMarkLength(text: string): number {
if (text.length >= 1) {
const ch0 = text.charCodeAt(0);
if (ch0 === 0xfeff) return 1;
if (ch0 === 0xfe) return text.length >= 2 && text.charCodeAt(1) === 0xff ? 2 : 0;
if (ch0 === 0xff) return text.length >= 2 && text.charCodeAt(1) === 0xfe ? 2 : 0;
if (ch0 === 0xef) return text.length >= 3 && text.charCodeAt(1) === 0xbb && text.charCodeAt(2) === 0xbf ? 3 : 0;
}
return 0;
}
export function removeByteOrderMark(text: string): string {
const length = getByteOrderMarkLength(text);
return length ? text.slice(length) : text;
}
export function addUTF8ByteOrderMark(text: string) {
return getByteOrderMarkLength(text) === 0 ? "\u00EF\u00BB\u00BF" + text : text;
}
export function theory<T extends any[]>(name: string, cb: (...args: T) => void, data: T[]) {
for (const entry of data) {
it(`${name}(${entry.map(formatTheoryDatum).join(", ")})`, () => cb(...entry));
}
}
function formatTheoryDatum(value: any) {
return typeof value === "function" ? value.name || "<anonymous function>" :
value === undefined ? "undefined" :
JSON.stringify(value);
}
}