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normalize-ja-input

v0.1.1

Published

Tiny TypeScript utility for normalizing Japanese form input.

Readme

normalize-ja-input

Tiny TypeScript utility for normalizing Japanese form input.

import { normalizeJaInput } from "normalize-ja-input"

normalizeJaInput(" TEL:090ー1234ー5678 ")
// => "TEL:090-1234-5678"

Features

  • 全角数字を半角数字に変換
  • 全角英字を半角英字に変換
  • 全角スペースを半角スペースに変換
  • 連続する空白を1つに正規化
  • 日本語入力で混ざりがちなハイフン類を - に統一
  • 依存ゼロ
  • TypeScript対応

Installation

npm install normalize-ja-input

Usage

import { normalizeJaInput } from "normalize-ja-input"

normalizeJaInput(" 山田 太郎 ")
// => "山田 太郎"

normalizeJaInput("12345")
// => "12345"

normalizeJaInput("ABCxyz")
// => "ABCxyz"

normalizeJaInput("090ー1234−5678")
// => "090-1234-5678"

Options

normalizeJaInput(input, {
  trim: true,
  collapseSpaces: true,
  spaces: "halfwidth",
  digits: "halfwidth",
  alphabets: "halfwidth",
  hyphens: "ascii",
})

trim

Type: boolean
Default: true

前後の空白を削除します。

normalizeJaInput(" 山田 ")
// => "山田"

collapseSpaces

Type: boolean
Default: true

連続する半角スペース、タブ、改行を1つの半角スペースにします。

normalizeJaInput("山田   太郎")
// => "山田 太郎"

spaces

Type: "preserve" | "halfwidth"
Default: "halfwidth"

全角スペースを半角スペースにします。

normalizeJaInput("山田 太郎")
// => "山田 太郎"

digits

Type: "preserve" | "halfwidth"
Default: "halfwidth"

全角数字を半角数字にします。

normalizeJaInput("123")
// => "123"

alphabets

Type: "preserve" | "halfwidth"
Default: "halfwidth"

全角英字を半角英字にします。

normalizeJaInput("ABCxyz")
// => "ABCxyz"

hyphens

Type: "preserve" | "ascii"
Default: "ascii"

日本語入力で混ざりがちなハイフン類を ASCII の - に統一します。

normalizeJaInput("090ー1234−5678")
// => "090-1234-5678"

Live Demo

  • Demo → https://fusaihanabi.github.io/normalize-ja-input
  • npm → https://www.npmjs.com/package/normalize-ja-input
  • GitHub → https://github.com/fusaihanabi/normalize-ja-input
  • Official → https://dl.fusai-hanabi.com

What this library does not do

This library intentionally does not validate Japanese phone numbers, postal codes, addresses, or names.

It only normalizes common input variations before validation or storage.

License

MIT