@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
153 lines • 4.89 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.Iterable = void 0;
var Iterable;
(function (Iterable) {
function is(thing) {
return thing && typeof thing === 'object' && typeof thing[Symbol.iterator] === 'function';
}
Iterable.is = is;
const _empty = Object.freeze([]);
function empty() {
return _empty;
}
Iterable.empty = empty;
function* single(element) {
yield element;
}
Iterable.single = single;
function from(iterable) {
return iterable || _empty;
}
Iterable.from = from;
function isEmpty(iterable) {
return !iterable || iterable[Symbol.iterator]().next().done === true;
}
Iterable.isEmpty = isEmpty;
function first(iterable) {
return iterable[Symbol.iterator]().next().value;
}
Iterable.first = first;
function some(iterable, predicate) {
for (const element of iterable) {
if (predicate(element)) {
return true;
}
}
return false;
}
Iterable.some = some;
function find(iterable, predicate) {
for (const element of iterable) {
if (predicate(element)) {
return element;
}
}
return undefined;
}
Iterable.find = find;
function* filter(iterable, predicate) {
for (const element of iterable) {
if (predicate(element)) {
yield element;
}
}
}
Iterable.filter = filter;
function* map(iterable, fn) {
let index = 0;
for (const element of iterable) {
yield fn(element, index++);
}
}
Iterable.map = map;
function* concat(...iterables) {
for (const iterable of iterables) {
for (const element of iterable) {
yield element;
}
}
}
Iterable.concat = concat;
function* concatNested(iterables) {
for (const iterable of iterables) {
for (const element of iterable) {
yield element;
}
}
}
Iterable.concatNested = concatNested;
function reduce(iterable, reducer, initialValue) {
let value = initialValue;
for (const element of iterable) {
value = reducer(value, element);
}
return value;
}
Iterable.reduce = reduce;
/**
* Returns an iterable slice of the array, with the same semantics as `array.slice()`.
*/
function* slice(arr, from, to = arr.length) {
if (from < 0) {
from += arr.length;
}
if (to < 0) {
to += arr.length;
}
else if (to > arr.length) {
to = arr.length;
}
for (; from < to; from++) {
yield arr[from];
}
}
Iterable.slice = slice;
/**
* Consumes `atMost` elements from iterable and returns the consumed elements,
* and an iterable for the rest of the elements.
*/
function consume(iterable, atMost = Number.POSITIVE_INFINITY) {
const consumed = [];
if (atMost === 0) {
return [consumed, iterable];
}
const iterator = iterable[Symbol.iterator]();
for (let i = 0; i < atMost; i++) {
const next = iterator.next();
if (next.done) {
return [consumed, Iterable.empty()];
}
consumed.push(next.value);
}
return [consumed, { [Symbol.iterator]() { return iterator; } }];
}
Iterable.consume = consume;
/**
* Returns whether the iterables are the same length and all items are
* equal using the comparator function.
*/
function equals(a, b, comparator = (at, bt) => at === bt) {
const ai = a[Symbol.iterator]();
const bi = b[Symbol.iterator]();
while (true) {
const an = ai.next();
const bn = bi.next();
if (an.done !== bn.done) {
return false;
}
else if (an.done) {
return true;
}
else if (!comparator(an.value, bn.value)) {
return false;
}
}
}
Iterable.equals = equals;
})(Iterable = exports.Iterable || (exports.Iterable = {}));
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