rulesfert.blogg.se - Slapdash transformers

#SLAPDASH TRANSFORMERS FULL#
#SLAPDASH TRANSFORMERS CODE#

Iterates over the properties of object, calling callback on each.

This only supports arrays, not objects.

Returning false will not halt execution of this loop, unlike lodash.

Negative values are supported for start/ end. Returns a subset of array, from the index start to the index end. This is a featurefill around Object.values. Returns the own property values of object. This is a featurefill around Object.keys.

This does not support the optional callback and context methods from lodash.

sources)ĭepending on the browser (and/or bad polyfills), this is either Object.assign or an equivalent featurefill. This returns a wrapper function around method, passing context as this, and optionally passing one or more arguments. For most common use cases involving a non-function callback, an alternative will be provided.ĪPI Reference bind(method, context, arguments.)

Callbacks supplied to these methods may only be functions.

Each of lodash's collection methods will be implemented to support arrays only, with an object-specific version provided separately.

Slapdash's 'collection' methods are split into two sets - array and object.

Unless the operand in question is declared near to where it is used (or there is an assertion/invariant to validate the type), it can be difficult to determine what type it actually is.

#SLAPDASH TRANSFORMERS CODE#

Reading code which uses these methods can be difficult to reason about.

There are subtleties to the behavior of each method depending on the types of the operands.al.) is that they can operate on either arrays or objects, and that they accept callbacks in the form of strings and objects, as well as simply functions. One of the most problematic aspects of using lodash's common methods (like map, each, reduce, et. If another script has tampered with the prototype (or doesn't provide one at all), we fall back to our own (small, performant) implementation. However, the first time it attempts to get a native method, it will make sure that it is the one it expected. Where possible, slapdash uses browser native methods to boost performance.This includes, for example, supporting strings in place of callbacks in map/ each/ filter etc.

#SLAPDASH TRANSFORMERS FULL#

By not implementing the full lodash/underscore API, a lot of cruft can be removed.So, Slapdash featurefills missing native methods without touching any prototypes. I mean, it doesn't even have Object.keys!. Maybe you're writing script for deployment on 3rd party sites - maybe that 3rd party decides to override Function::bind with something incompatible? Don't worry. We don't all have control over our execution environment.IE8/9 are a distant memory for most web developers, but unfortunately for some of us they remain a waking nightmare.Slapdash's prodigious speed allows him to do everything quickly-which he likes, because anything else would require effort. Be compatible with Internet Explorer 8 and up.Slapdash is a lightweight JavaScript utility belt, inspired heavily by