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denoland-deno/cli/js/util.ts
crowlKats e435c2be15
Remove doc strings from cli/js TS files (#4329)
Co-authored-by: Ryan Dahl <ry@tinyclouds.org>
2020-03-13 10:22:22 +01:00

72 lines
1.8 KiB
TypeScript

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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 function assert(cond: unknown, msg = "assert"): asserts cond {
if (!cond) {
throw Error(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
});
}