Range Iterator (JavaScript)

⚖️ MIT

🗂️

🆙 ()

A JavaScript module to iterate between range.

🎯 Target

• Bun ^ v1.0.0
• Cloudflare Workers
• Deno >= v1.34.0

  🛡️ Require Permission

  N/A

• NodeJS >= v16.13.0

🔗 Other Edition

• TypeScript

🔰 Usage

Via Installation

🎯 Supported Target

• Cloudflare Workers
• NodeJS

1. Install via console/shell/terminal:
   • Via NPM

     npm install @hugoalh/range-iterator[@<Tag>]

   • Via PNPM

     pnpm add @hugoalh/range-iterator[@<Tag>]

   • Via Yarn

     yarn add @hugoalh/range-iterator[@<Tag>]

2. Import at the script (<ScriptName>.js):

   import ... from "@hugoalh/range-iterator";

   ℹ️ Note

   Although it is recommended to import the entire module, it is also able to import part of the module with sub path if available, please visit file package.json property exports for available sub paths.

Via NPM Specifier

🎯 Supported Target

• Bun
• Deno

1. Import at the script (<ScriptName>.js):

   import ... from "npm:@hugoalh/range-iterator[@<Tag>]";

   ℹ️ Note

   Although it is recommended to import the entire module, it is also able to import part of the module with sub path if available, please visit file package.json property exports for available sub paths.

🧩 API

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

• interface RangeIteratorOptions<T extends RangeIteratorAcceptType> {
    /**
    * Whether to exclusive end.
    * @default false
    */
    endExclusive?: boolean;
    /**
    * Step of the decrement/increment of the iterate.
    * @default 1n // Big integer.
    * @default 1 // Number/String.
    */
    step?: RangeIteratorIndexType<T>;
  }

• type RangeIteratorAcceptType = bigint | number | string;

• type RangeIteratorIndexType<T extends RangeIteratorAcceptType> = T extends bigint ? bigint : number;

✍️ Example

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

• Array.from(rangeIterator(1n, 9n, { endExclusive: 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, { endExclusive: 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"]