This commit is contained in:
50
node_modules/core-js/internals/iterator-window.js
generated
vendored
Normal file
50
node_modules/core-js/internals/iterator-window.js
generated
vendored
Normal file
@@ -0,0 +1,50 @@
|
||||
'use strict';
|
||||
var anObject = require('../internals/an-object');
|
||||
var call = require('../internals/function-call');
|
||||
var createIteratorProxy = require('../internals/iterator-create-proxy');
|
||||
var createIterResultObject = require('../internals/create-iter-result-object');
|
||||
var getIteratorDirect = require('../internals/get-iterator-direct');
|
||||
var iteratorClose = require('../internals/iterator-close');
|
||||
var uncurryThis = require('../internals/function-uncurry-this');
|
||||
|
||||
var $RangeError = RangeError;
|
||||
var $TypeError = TypeError;
|
||||
var push = uncurryThis([].push);
|
||||
var slice = uncurryThis([].slice);
|
||||
var ALLOW_PARTIAL = 'allow-partial';
|
||||
|
||||
var IteratorProxy = createIteratorProxy(function () {
|
||||
var iterator = this.iterator;
|
||||
var next = this.next;
|
||||
var buffer = this.buffer;
|
||||
var windowSize = this.windowSize;
|
||||
var allowPartial = this.allowPartial;
|
||||
var result, done;
|
||||
while (true) {
|
||||
result = anObject(call(next, iterator));
|
||||
done = this.done = !!result.done;
|
||||
if (allowPartial && done && buffer.length && buffer.length < windowSize) return createIterResultObject(slice(buffer, 0), false);
|
||||
if (done) return createIterResultObject(undefined, true);
|
||||
|
||||
if (buffer.length === windowSize) this.buffer = buffer = slice(buffer, 1);
|
||||
push(buffer, result.value);
|
||||
if (buffer.length === windowSize) return createIterResultObject(slice(buffer, 0), false);
|
||||
}
|
||||
}, false, true);
|
||||
|
||||
// `Iterator.prototype.windows` and obsolete `Iterator.prototype.sliding` methods
|
||||
// https://github.com/tc39/proposal-iterator-chunking
|
||||
module.exports = function (O, windowSize, undersized) {
|
||||
anObject(O);
|
||||
if (typeof windowSize != 'number' || !windowSize || windowSize >>> 0 !== windowSize) {
|
||||
return iteratorClose(O, 'throw', new $RangeError('`windowSize` must be integer in [1, 2^32-1]'));
|
||||
}
|
||||
if (undersized !== undefined && undersized !== 'only-full' && undersized !== ALLOW_PARTIAL) {
|
||||
return iteratorClose(O, 'throw', new $TypeError('Incorrect `undersized` argument'));
|
||||
}
|
||||
return new IteratorProxy(getIteratorDirect(O), {
|
||||
windowSize: windowSize,
|
||||
buffer: [],
|
||||
allowPartial: undersized === ALLOW_PARTIAL
|
||||
});
|
||||
};
|
||||
Reference in New Issue
Block a user