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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { build } from "./build.ts";
import { exposeForTest } from "./internals.ts";
let logDebug = false;
let logSource = "JS";
// @internal
export function setLogDebug(debug: boolean, source?: string): void {
logDebug = debug;
if (source) {
logSource = source;
}
}
export function log(...args: unknown[]): void {
if (logDebug) {
// if we destructure `console` off `globalThis` too early, we don't bind to
// the right console, therefore we don't log anything out.
globalThis.console.log(`DEBUG ${logSource} -`, ...args);
}
}
// @internal
export class AssertionError extends Error {
constructor(msg?: string) {
super(msg);
this.name = "AssertionError";
}
}
// @internal
export function assert(cond: unknown, msg = "Assertion failed."): asserts cond {
if (!cond) {
throw new AssertionError(msg);
}
}
export type ResolveFunction<T> = (value?: T | PromiseLike<T>) => void;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
export type RejectFunction = (reason?: any) => void;
export interface ResolvableMethods<T> {
resolve: ResolveFunction<T>;
reject: RejectFunction;
}
// @internal
export type Resolvable<T> = Promise<T> & ResolvableMethods<T>;
// @internal
export function createResolvable<T>(): Resolvable<T> {
let resolve: ResolveFunction<T>;
let reject: RejectFunction;
const promise = new Promise<T>((res, rej): void => {
resolve = res;
reject = rej;
}) as Resolvable<T>;
promise.resolve = resolve!;
promise.reject = reject!;
return promise;
}
// @internal
export function notImplemented(): never {
throw new Error("not implemented");
}
// @internal
export function immutableDefine(
// eslint-disable-next-line @typescript-eslint/no-explicit-any
o: any,
p: string | number | symbol,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
value: any
): void {
Object.defineProperty(o, p, {
value,
configurable: false,
writable: false,
});
}
function pathFromURLWin32(url: URL): string {
const hostname = url.hostname;
const pathname = decodeURIComponent(url.pathname.replace(/\//g, "\\"));
if (hostname !== "") {
//TODO(actual-size) Node adds a punycode decoding step, we should consider adding this
return `\\\\${hostname}${pathname}`;
}
const validPath = /^\\(?<driveLetter>[A-Za-z]):\\/;
const matches = validPath.exec(pathname);
if (!matches?.groups?.driveLetter) {
throw new TypeError("A URL with the file schema must be absolute.");
}
// we don't want a leading slash on an absolute path in Windows
return pathname.slice(1);
}
function pathFromURLPosix(url: URL): string {
if (url.hostname !== "") {
throw new TypeError(`Host must be empty.`);
}
return decodeURIComponent(url.pathname);
}
export function pathFromURL(pathOrUrl: string | URL): string {
if (typeof pathOrUrl == "string") {
try {
pathOrUrl = new URL(pathOrUrl);
} catch {}
}
if (pathOrUrl instanceof URL) {
if (pathOrUrl.protocol != "file:") {
throw new TypeError("Must be a path string or file URL.");
}
return build.os == "windows"
? pathFromURLWin32(pathOrUrl)
: pathFromURLPosix(pathOrUrl);
}
return pathOrUrl;
}
exposeForTest("pathFromURL", pathFromURL);
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