diff options
Diffstat (limited to 'node_modules/core-js/modules/es.array-buffer.slice.js')
| -rw-r--r-- | node_modules/core-js/modules/es.array-buffer.slice.js | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/node_modules/core-js/modules/es.array-buffer.slice.js b/node_modules/core-js/modules/es.array-buffer.slice.js new file mode 100644 index 0000000..c137543 --- /dev/null +++ b/node_modules/core-js/modules/es.array-buffer.slice.js @@ -0,0 +1,36 @@ +'use strict'; +var $ = require('../internals/export'); +var fails = require('../internals/fails'); +var ArrayBufferModule = require('../internals/array-buffer'); +var anObject = require('../internals/an-object'); +var toAbsoluteIndex = require('../internals/to-absolute-index'); +var toLength = require('../internals/to-length'); +var speciesConstructor = require('../internals/species-constructor'); + +var ArrayBuffer = ArrayBufferModule.ArrayBuffer; +var DataView = ArrayBufferModule.DataView; +var nativeArrayBufferSlice = ArrayBuffer.prototype.slice; + +var INCORRECT_SLICE = fails(function () { + return !new ArrayBuffer(2).slice(1, undefined).byteLength; +}); + +// `ArrayBuffer.prototype.slice` method +// https://tc39.github.io/ecma262/#sec-arraybuffer.prototype.slice +$({ target: 'ArrayBuffer', proto: true, unsafe: true, forced: INCORRECT_SLICE }, { + slice: function slice(start, end) { + if (nativeArrayBufferSlice !== undefined && end === undefined) { + return nativeArrayBufferSlice.call(anObject(this), start); // FF fix + } + var length = anObject(this).byteLength; + var first = toAbsoluteIndex(start, length); + var fin = toAbsoluteIndex(end === undefined ? length : end, length); + var result = new (speciesConstructor(this, ArrayBuffer))(toLength(fin - first)); + var viewSource = new DataView(this); + var viewTarget = new DataView(result); + var index = 0; + while (first < fin) { + viewTarget.setUint8(index++, viewSource.getUint8(first++)); + } return result; + } +}); |
