Range Iterator (ES)

⚖️ MIT

An ECMAScript module to iterate between range.

🎯 Targets

Runtime \ Source	GitHub Raw	JSR	NPM
Bun >= v1.1.0	❌	✔️	✔️
Deno >= v2.1.0	✔️	✔️	✔️
NodeJS >= v20.9.0	❌	✔️	✔️

🛡️ Runtime Permissions

This does not request any runtime permission.

#️⃣ Sources

• GitHub Raw

  https://raw.githubusercontent.com/hugoalh/range-iterator-es/{Tag}/mod.ts
  

• JSR

  jsr:@hugoalh/range-iterator[@{Tag}]
  

• NPM

  npm:@hugoalh/range-iterator[@{Tag}]
  

Note

• It is recommended to include tag for immutability.
• These are not part of the public APIs hence should not be used:
  • Benchmark/Test file (e.g.: example.bench.ts, example.test.ts).
  • Entrypoint name or path include any underscore prefix (e.g.: _example.ts, foo/_example.ts).
  • Identifier/Namespace/Symbol include any underscore prefix (e.g.: _example, Foo._example).

⤵️ Entrypoints

Name	Path	Description
.	./mod.ts	Default.

🧩 APIs

• function rangeIterator(start: bigint, end: bigint, options?: RangeIteratorOptions<bigint>): Generator<bigint>;
  function rangeIterator(start: bigint, end: bigint, step: bigint): Generator<bigint>;
  function rangeIterator(start: number, end: number, options?: RangeIteratorOptions<number>): Generator<number>;
  function rangeIterator(start: number, end: number, step: number): Generator<number>;
  function rangeIterator(start: string, end: string, options?: RangeIteratorOptions<string>): Generator<string>;
  function rangeIterator(start: string, end: string, step: number): Generator<string>;

• interface RangeIteratorOptions<T extends bigint | number | string> {
    excludeEnd?: boolean;
    excludes?: readonly T[] | Set<T>;
    excludeStart?: boolean;
    step?: T extends string ? number : T;
  }

Note

• For the full or prettier documentation, can visit via:
  • Deno CLI deno doc
  • JSR

✍️ Examples

• Array.from(rangeIterator(1, 9));
  //=> [1, 2, 3, 4, 5, 6, 7, 8, 9]

• Array.from(rangeIterator(1n, 9n, { excludeEnd: true }));
  //=> [1n, 2n, 3n, 4n, 5n, 6n, 7n, 8n]

• Array.from(rangeIterator(1, 9, { step: 0.5 }));
  //=> [1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9]

• Array.from(rangeIterator("a", "z"));
  //=> ["a", "b", "c", ... +20 ..., "x", "y", "z"]

• Array.from(rangeIterator(9, 1));
  //=> [9, 8, 7, 6, 5, 4, 3, 2, 1]

• Array.from(rangeIterator(9n, 1n, { excludeEnd: true }));
  //=> [9n, 8n, 7n, 6n, 5n, 4n, 3n, 2n]

• Array.from(rangeIterator(9, 1, { step: 0.5 }));
  //=> [9, 8.5, 8, 7.5, 7, 6.5, 6, 5.5, 5, 4.5, 4, 3.5, 3, 2.5, 2, 1.5, 1]

• Array.from(rangeIterator("z", "a"));
  //=> ["z", "y", "x", ... +20 ..., "c", "b", "a"]