precss - Use Sass-like markup in your CSS

•    Javascript

---

PreCSS lets you use Sass-like markup and staged CSS features in CSS. PreCSS combines Sass-like syntactical sugar — like variables, conditionals, and iterators — with emerging CSS features — like color functions, logical and custom properties, media query ranges, and image sets.

postcss css postcss-plugin sass scss variables conditionals iterations iterators iterables iterate contents eaches elses fors ifs includes imports medias queries query mixins defaults functions colors customs dirs system-ui image-set logical properties blocks inlines starts ends any-link font-variant overflow-wrap caniuse

chillout - Reduce CPU usage in JavaScript

•    Javascript

---

Reduce JavaScript CPU usage by asynchronous iteration. Provides asynchronous iteration functions that have a Promise based interface and it can execute with low CPU usage. Each iteration adds delay if the processing is heavy to maintain the CPU stability. Iterate without delay if processing is fast. Therefore, it will realize friendly processing for your machine. It can execute JavaScript without "Warning: Unresponsive Script" alert in the browser.

cpu async promise iteration function-callback chillout iterator-functions benchmark array-iteration repeat ecmascript cpu-load iterate iterator setimmediate

p-times - Run promise-returning & async functions a specific number of times concurrently

•    Javascript

---

Returns a Promise that is fulfilled when all promises returned from mapper are fulfilled, or rejects if any of the promises reject. The fulfilled value is an Array of the fulfilled values returned from mapper in order.Number of times to call mapper.

promise times number count loop iterate async await promises concurrently concurrency parallel bluebird

rr - A simple JavaScript component to iterate an array round robin.

•    Javascript

---

A simple JavaScript component to iterate an array round robin.Sometimes you want to loop over an array and start at the beginning again.

array utility iterate round-robin collection

async-each - No-bullshit, ultra-simple, 35-lines-of-code async parallel forEach / map function for JavaScript

•    Javascript

---

No-bullshit, ultra-simple, 35-lines-of-code async parallel forEach function for JavaScript.We don't need junky 30K async libs. Really.

async foreach each map asynchronous iteration iterate loop parallel concurrent array flow control-flow

each-async - Async concurrent iterator (async forEach)

•    Javascript

---

Like async.each(), but tiny.I often use async.each() for doing async operations when iterating, but I almost never use the other gadzillion methods in async.

each async asynchronous iteration iterate loop foreach parallel concurrent array flow control-flow

filter-obj - Filter object keys and values into a new object

•    Javascript

---

Source object to filter properties from.Array of properties that should be filtered from the object or a filter function. The function has the signature filterFn(sourceKey, sourceValue, source).

filter obj object key keys value values val iterate iterator

p-forever - Run promise-returning & async functions repeatedly until you end it

•    Javascript

---

Think of it like an async version of while (true) {}.Here we create some numbered fixtures. The createFixture() function returns a Promise.

promise forever infinitely infinite while whilst repeat repeatedly recursive recursion times number count loop iterate serial serially async await promises bluebird

map-obj - Map object keys and values into a new object

•    Javascript

---

Source object to copy properties from.Mapping function.

map obj object key keys value values val iterate iterator rename modify deep recurse recursive

camelcase-keys - Convert object keys to camelCase

•    Javascript

---

Object or array of objects to camelCase.Exclude keys from being camelCased.

map obj object key keys value values val iterate camelcase camel-case camel case dash hyphen dot underscore separator string text convert deep recurse recursive

get-range - Lazy number range generator

•    Javascript

---

Useful for iteration.Similar to the Python 3 range function.

range xrange generator generate iterator iterable iterate gen get number numbers

js-sorted-set - Sorted set data structures in JavaScript

•    CoffeeScript

---

... this works, but it's a bit cryptic and some operations--notably iterate-- will be very slow with large sets. You can npm install js-sorted-set or bower install js-sorted-set. Alternatively, just download sorted-set.js from this directory.

sort sorted set sets left-leaning red-black binary tree iterate iterator comparator

genData - A normalization pattern to build, query, and manipulate everything.

•    Javascript

---

An iteration utility with a rich callback environment. genData iterates a queue, beginning with the first parameter, then it's non-inherited members, then their non-inherited members, and so on - recursively and in depth-first order. Below is what genData outputs when a callback simply returns the current iteration value.

data iterate select generate recursive

arr-map - Faster, node.js focused alternative to JavaScript's native array map.

•    Javascript

---

Faster, node.js focused alternative to JavaScript's native array map. JavaScript's native Array.map() is slow, and other popular array map libraries are focused on browser compatibility, which makes them bloated or less than idea for non-browser usage. This implementation is focused on node.js usage keeping it light and fast.

map array loop iterate utility arr

for-in - Iterate over the enumerable properties of an object, and return an object with properties that evaluate to true from the callback

•    Javascript

---

Iterate over the own and inherited enumerable properties of an object, and return an object with properties that evaluate to true from the callback. Exit early by returning `false`. JavaScript/Node.js

forin for-in iterate object keys values for for-own has has-own hasown in key own value

character-iterator - Iterate through text characters in the DOM tree

•    Javascript

---

Iterate through text characters in the DOM tree. Handles parent & sibling relationships. Get the next character in the DOM starting at el with offset. If offset isn't specified it starts at 0. You can also set an optional root to contain the iterator.

browser dom char character iterate

roundround - A dead simple round-robin array iterator

•    Javascript

---

A dead simple round-robin array iterator

array roundrobin iterate iterator

objectify-array - Recursively convert arrays of objects into a single keyed object tree

•    Javascript

---

you can specify options.by to be a function, this function will receive the element and should return the key to be used for this element.

array object convenience tree walk iterate key names

js-deep-for-each - Recursively iterates over collections arrays and objects

•    Javascript

---

Recursively iterates over arrays and objects. The iteration is made using a deep-first algorithm. This library expects the host environment to be up-to-date or polyfilled with core-js or similar.

for-each deep array object collection iterate foreach iterator

redact-secrets - Deeply iterate over an object and redact secret values by replacing them with a predefined string

•    Javascript

---

Deeply iterate over an object and redact secret values by replacing them with a predefined string. This module exposes a init function which takes a single argument: The string used as a replacement variable for values that are redacted.

secret hidden redact redacting iterate walk traverse obj object json