FMHY-Website/docs/.vitepress/transformer/core.ts

/**
  Copyright (c) taskylizard. All rights reserved.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
*/
import consola from 'consola'

type Transform = {
  name: string
  find: string | RegExp
  replace: string | ((match: string) => string)
}

type TransformerFunc = (name: string, transforms: Transform[]) => Replacer

interface Replacer {
  transform: TransformerFunc
  getText(): string
}

export const transformer = (text: string) => {
  const handler: ProxyHandler<{ text: string }> = {
    get(target, prop) {
      if (prop === 'transform') {
        return (name: string, transforms: Transform[]): Replacer => {
          consola.debug(`Starting transform ${name} with ${transforms}`)

          transforms.forEach(({ name, find, replace }) => {
            consola.debug(`Transforming ${name} with ${find}`)
            target.text = target.text.replace(find, replace as any)
          })

          // @ts-expect-error - Proxy is not typed
          return proxy
        }
      }
      if (prop === 'getText') {
        return () => target.text
      }
      return Reflect.get(target, prop)
    }
  }

  const target = { text }
  const proxy = new Proxy(target, handler)
  return proxy as unknown as Replacer
}

export function replaceUnderscore(text: string): string {
  const pattern = /\/#[\w\-]+(?:_[\w]+)*/g
  const matches = text.match(pattern) || []
  let _text = text
  for (const match of matches) {
    const replacement = match.replace(/_/g, '-')
    _text = _text.replace(match, replacement)
  }
  return _text
}