@pkerschbaum/code-oss-file-service
Version:
VS Code ([microsoft/vscode](https://github.com/microsoft/vscode)) includes a rich "`FileService`" and "`DiskFileSystemProvider`" abstraction built on top of Node.js core modules (`fs`, `path`) and Electron's `shell` module. This package allows to use that
54 lines • 1.78 kB
JavaScript
;
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.Lazy = void 0;
class Lazy {
constructor(executor) {
this.executor = executor;
this._didRun = false;
}
/**
* True if the lazy value has been resolved.
*/
hasValue() { return this._didRun; }
/**
* Get the wrapped value.
*
* This will force evaluation of the lazy value if it has not been resolved yet. Lazy values are only
* resolved once. `getValue` will re-throw exceptions that are hit while resolving the value
*/
getValue() {
if (!this._didRun) {
try {
this._value = this.executor();
}
catch (err) {
this._error = err;
}
finally {
this._didRun = true;
}
}
if (this._error) {
throw this._error;
}
return this._value;
}
/**
* Get the wrapped value without forcing evaluation.
*/
get rawValue() { return this._value; }
/**
* Create a new lazy value that is the result of applying `f` to the wrapped value.
*
* This does not force the evaluation of the current lazy value.
*/
map(f) {
return new Lazy(() => f(this.getValue()));
}
}
exports.Lazy = Lazy;
//# sourceMappingURL=lazy.js.map