An Extensive JavaScript Standard Library.
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Simple & Familiar API with some differences
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Cross-Environment Compatibility: Execute seamlessly in browsers, Node.js, Bun, Deno, etc.
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Practical Default Options
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Includes Async Utils
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TypeScript Support
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Works with both CJS & ESM
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Supports some Older Browsers & Node.js >= 16
Install it using your favourite package manager.
npm install @opentf/stdyarn add @opentf/stdpnpm add @opentf/stdbun add @opentf/stddeno add @opentf/stdLet’s explore some of the library’s capabilities:
- Checking if a Value is Numeric:
import { isNum } from "@opentf/std";
isNum(NaN); //=> false
isNum('1'); //=> false
isNum('1', true); //=> true
isNum(1); //=> true- Converting Strings to Pascal Case:
import { pascalCase } from "@opentf/std";
pascalCase("pascal case"); //=> PascalCase- Sorting an Array in Descending Order:
import { sort } from "@opentf/std";
sort([1, 10, 21, 2], "desc"); //=> [21, 10, 2, 1]- Deep Cloning an Object:
import { clone } from "@opentf/std";
const obj = { a: 1, b: "abc", c: new Map([["key", "val"]]) };
clone(obj); // Returns deeply cloned value- Checking Equality of Objects & Arrays:
import { isEql, isEqlArr } from "@opentf/std";
const mapA = new Map([
["a", 1],
["b", 2],
]);
const mapB = new Map([
["b", 2],
["a", 1],
]);
isEql(mapA, mapB); //=> false
isEqlArr([1, 2, 3], [2, 3, 1]); //=> true- Adding a Delay (1 second) with sleep:
import { sleep } from "@opentf/std";
await sleep(1000); // Suspends execution for 1 second- Functions composition using
pipe&composefunctions:
import { pipe, compose } from "@opentf/std";
pipe(
1,
(x) => x + 1,
(x) => x * 5,
); //=> 10
compose(
1,
(x) => x + 1,
(x) => x * 5,
); //=> 6- Pick & Omit Paths in an Object
import { pick omit } from '@opentf/std';
const obj = { a: 1, b: 2, c: 3 };
pick(obj, 'a', 'c'); //=> { a: 1, c: 3 }
omit(obj, 'a', 'c'); //=> { b: 2 }- arrIns
- arrReplace
- arrRm
- bounds
- chunk
- compact
- countBy
- diff
- drop
- groupBy
- intersection
- intersperse
- max
- min
- move
- range
- reverse
- shuffle
- sort
- sortBy
- swap
- symDiff
- take
- union
- uniq
- avg
- clamp
- divMod
- isDisjointFrom
- isEven
- isOdd
- isSubsetOf
- isSupersetOf
- mean
- median
- mode
- percentage
- percentageOf
- prod
- sum
- isArr
- isArrBuf
- isAsynFn
- isBigInt
- isBlob
- isBool
- isDataView
- isDate
- isErr
- isFn
- isGenFn
- isInfinity
- isJSON
- isMap
- isNull
- isNum
- isObj
- isPureObj
- isRegEx
- isSet
- isStr
- isSym
- isTypedArr
- isUndef
- isWkMap
- isWkRef
- isWkSet
Some benchmark outputs are shown here for reference.
[!IMPORTANT]
Our priorities are reliability and accuracy rather than performance.
clone:
┌───┬──────────────────────────┬─────────┬────────────────────┬────────┬─────────┐
│ │ Task Name │ ops/sec │ Average Time (ns) │ Margin │ Samples │
├───┼──────────────────────────┼─────────┼────────────────────┼────────┼─────────┤
│ 0 │ structuredClone (Native) │ 276,824 │ 3612.3959469709525 │ ±1.29% │ 27683 │
│ 1 │ _.cloneDeep (Lodash) │ 216,965 │ 4609.032953864744 │ ±2.41% │ 21697 │
│ 2 │ R.clone (ramda) │ 174,567 │ 5728.439422580611 │ ±1.92% │ 17457 │
│ 3 │ R2.clone (remeda) │ 310,268 │ 3223.0154703960834 │ ±2.40% │ 31027 │
│ 4 │ cloneDeep (clone-deep) │ 468,908 │ 2132.611673882092 │ ±1.70% │ 46891 │
│ 5 │ copy (fast-copy) │ 486,179 │ 2056.852050680814 │ ±1.91% │ 48618 │
+ 6 │ clone │ 535,302 │ 1868.1028376072306 │ ±2.07% │ 53531 │
└───┴──────────────────────────┴─────────┴────────────────────┴────────┴─────────┘
*Note:
- Here the lodash does not support errors, sparse arrays & objects in map keys.
- Here the ramda & remeda does not support cloning Map & Set.
- The fast-copy does not clone objects within Map, buffers in TypedArray, sparse arrays.
- The clone-deep does not handle circular refs, does not clone objects within map,
sparse arrays, internal refs within the object, TypedArray buffers & DataView.
sortBy:
┌───┬────────────────────┬───────────┬───────────────────┬────────┬─────────┐
│ │ Task Name │ ops/sec │ Average Time (ns) │ Margin │ Samples │
├───┼────────────────────┼───────────┼───────────────────┼────────┼─────────┤
│ 0 │ _.orderBy (Lodash) │ 1,231,295 │ 812.1529684071648 │ ±3.09% │ 123130 │
│ 1 │ R.sortWith (Ramda) │ 1,279,200 │ 781.7380570822326 │ ±2.27% │ 127921 │
│ 2 │ R2.sortBy (Remeda) │ 1,419,707 │ 704.3703291518029 │ ±2.81% │ 141971 │
│ 3 │ sort (Moderndash) │ 2,697,568 │ 370.7042634668106 │ ±1.82% │ 269757 │
+ 4 │ sortBy │ 2,728,366 │ 366.5196435965459 │ ±2.19% │ 272837 │
└───┴────────────────────┴───────────┴───────────────────┴────────┴─────────┘
*Note: Here the Moderndash does not support passing object prop as string.
isEql:
┌───┬─────────────────────────────────────┬─────────┬────────────────────┬────────┬─────────┐
│ │ Task Name │ ops/sec │ Average Time (ns) │ Margin │ Samples │
├───┼─────────────────────────────────────┼─────────┼────────────────────┼────────┼─────────┤
│ 0 │ deepStrictEqual (Native) │ 950,686 │ 1051.871609041841 │ ±0.24% │ 95069 │
│ 1 │ fastDeepEqual (fast-deep-equal/es6) │ 652,611 │ 1532.3058134904193 │ ±1.49% │ 65262 │
│ 2 │ dequal │ 120,791 │ 8278.7573675501 │ ±0.74% │ 12080 │
│ 3 │ _.isEqual (Lodash) │ 152,075 │ 6575.660376117521 │ ±2.02% │ 15208 │
│ 4 │ R.equals (Ramda) │ 51,496 │ 19418.976504855284 │ ±1.70% │ 5150 │
+ 5 │ isEql │ 104,355 │ 9582.655710998957 │ ±1.13% │ 10436 │
└───┴─────────────────────────────────────┴─────────┴────────────────────┴────────┴─────────┘
*Note:
- The native util `deepStrictEqual` not available in browsers, does not check `Map` ordering & same invalid dates.
- The `fast-deep-equal/es6` does not support cyclic refs, Map ordering check, invalid dates, symbols, objects values in Set & TypedArrays.
- The lodash `isEqual` having issues with Map & does not check `Map` ordering & object values in `Set`.
- The ramda `equals` does not check `Map` ordering & symbols.
- The dequal does not support cyclic refs, Map ordering, symbols & same invalid dates.$ bun run build
$ bun benchmark.jsPlease read our important articles:
Copyright (c) Thanga Ganapathy (MIT License).