diff options
Diffstat (limited to 'node_modules/es5-ext/array/#/copy-within')
4 files changed, 65 insertions, 0 deletions
diff --git a/node_modules/es5-ext/array/#/copy-within/implement.js b/node_modules/es5-ext/array/#/copy-within/implement.js new file mode 100644 index 000000000..20910507a --- /dev/null +++ b/node_modules/es5-ext/array/#/copy-within/implement.js @@ -0,0 +1,9 @@ +"use strict"; + +if (!require("./is-implemented")()) { + Object.defineProperty(Array.prototype, "copyWithin", + { value: require("./shim"), +configurable: true, +enumerable: false, + writable: true }); +} diff --git a/node_modules/es5-ext/array/#/copy-within/index.js b/node_modules/es5-ext/array/#/copy-within/index.js new file mode 100644 index 000000000..0919b79b9 --- /dev/null +++ b/node_modules/es5-ext/array/#/copy-within/index.js @@ -0,0 +1,4 @@ +"use strict"; + +module.exports = require("./is-implemented")() + ? Array.prototype.copyWithin : require("./shim"); diff --git a/node_modules/es5-ext/array/#/copy-within/is-implemented.js b/node_modules/es5-ext/array/#/copy-within/is-implemented.js new file mode 100644 index 000000000..40c499e6d --- /dev/null +++ b/node_modules/es5-ext/array/#/copy-within/is-implemented.js @@ -0,0 +1,7 @@ +"use strict"; + +module.exports = function () { + var arr = [1, 2, 3, 4, 5]; + if (typeof arr.copyWithin !== "function") return false; + return String(arr.copyWithin(1, 3)) === "1,4,5,4,5"; +}; diff --git a/node_modules/es5-ext/array/#/copy-within/shim.js b/node_modules/es5-ext/array/#/copy-within/shim.js new file mode 100644 index 000000000..aad220ca7 --- /dev/null +++ b/node_modules/es5-ext/array/#/copy-within/shim.js @@ -0,0 +1,45 @@ +// Taken from: https://github.com/paulmillr/es6-shim/ + +"use strict"; + +var toInteger = require("../../../number/to-integer") + , toPosInt = require("../../../number/to-pos-integer") + , validValue = require("../../../object/valid-value") + , objHasOwnProperty = Object.prototype.hasOwnProperty + , max = Math.max + , min = Math.min; + +module.exports = function (target, start /*, end*/) { + var arr = validValue(this) + , end = arguments[2] + , length = toPosInt(arr.length) + , to + , from + , fin + , count + , direction; + + target = toInteger(target); + start = toInteger(start); + end = end === undefined ? length : toInteger(end); + + to = target < 0 ? max(length + target, 0) : min(target, length); + from = start < 0 ? max(length + start, 0) : min(start, length); + fin = end < 0 ? max(length + end, 0) : min(end, length); + count = min(fin - from, length - to); + direction = 1; + + if (from < to && to < from + count) { + direction = -1; + from += count - 1; + to += count - 1; + } + while (count > 0) { + if (objHasOwnProperty.call(arr, from)) arr[to] = arr[from]; + else delete arr[from]; + from += direction; + to += direction; + count -= 1; + } + return arr; +}; |