diff options
Diffstat (limited to 'node_modules/d/auto-bind.js')
-rw-r--r-- | node_modules/d/auto-bind.js | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/node_modules/d/auto-bind.js b/node_modules/d/auto-bind.js new file mode 100644 index 000000000..0fdac9b73 --- /dev/null +++ b/node_modules/d/auto-bind.js @@ -0,0 +1,32 @@ +'use strict'; + +var copy = require('es5-ext/object/copy') + , normalizeOptions = require('es5-ext/object/normalize-options') + , ensureCallable = require('es5-ext/object/valid-callable') + , map = require('es5-ext/object/map') + , callable = require('es5-ext/object/valid-callable') + , validValue = require('es5-ext/object/valid-value') + + , bind = Function.prototype.bind, defineProperty = Object.defineProperty + , hasOwnProperty = Object.prototype.hasOwnProperty + , define; + +define = function (name, desc, options) { + var value = validValue(desc) && callable(desc.value), dgs; + dgs = copy(desc); + delete dgs.writable; + delete dgs.value; + dgs.get = function () { + if (!options.overwriteDefinition && hasOwnProperty.call(this, name)) return value; + desc.value = bind.call(value, options.resolveContext ? options.resolveContext(this) : this); + defineProperty(this, name, desc); + return this[name]; + }; + return dgs; +}; + +module.exports = function (props/*, options*/) { + var options = normalizeOptions(arguments[1]); + if (options.resolveContext != null) ensureCallable(options.resolveContext); + return map(props, function (desc, name) { return define(name, desc, options); }); +}; |