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svrjs-blog-newsletter/cronjob/node_modules/mongodb/lib/promise_provider.js
2024-05-26 22:54:55 +02:00

51 lines
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1.8 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.PromiseProvider = void 0;
const error_1 = require("./error");
/** @internal */
const kPromise = Symbol('promise');
const store = {
[kPromise]: null
};
/**
* Global promise store allowing user-provided promises
* @deprecated Setting a custom promise library is deprecated the next major version will use the global Promise constructor only.
* @public
*/
class PromiseProvider {
/**
* Validates the passed in promise library
* @deprecated Setting a custom promise library is deprecated the next major version will use the global Promise constructor only.
*/
static validate(lib) {
if (typeof lib !== 'function')
throw new error_1.MongoInvalidArgumentError(`Promise must be a function, got ${lib}`);
return !!lib;
}
/**
* Sets the promise library
* @deprecated Setting a custom promise library is deprecated the next major version will use the global Promise constructor only.
*/
static set(lib) {
// eslint-disable-next-line no-restricted-syntax
if (lib === null) {
// Check explicitly against null since `.set()` (no args) should fall through to validate
store[kPromise] = null;
return;
}
if (!PromiseProvider.validate(lib)) {
// validate
return;
}
store[kPromise] = lib;
}
/**
* Get the stored promise library, or resolves passed in
* @deprecated Setting a custom promise library is deprecated the next major version will use the global Promise constructor only.
*/
static get() {
return store[kPromise];
}
}
exports.PromiseProvider = PromiseProvider;
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