Method split

src/Chunk.ts:115–152

(index: number)

  }

  split(index: number): Chunk {
    const sliceIndex = index - this.start

    const originalBefore = this.original.slice(0, sliceIndex)
    const originalAfter = this.original.slice(sliceIndex)

    this.original = originalBefore

    const newChunk = new Chunk(index, this.end, originalAfter)
    newChunk.outro = this.outro
    this.outro = ''

    this.end = index

    if (this.edited) {
      // after split we should save the edit content record into the correct chunk
      // to make sure sourcemap correct
      // For example:
      // '  test'.trim()
      //     split   -> '  ' + 'test'
      //   ✔️ edit    -> '' + 'test'
      //   ✖️ edit    -> 'test' + ''
      // TODO is this block necessary?...
      newChunk.edit('', false)
      this.content = ''
    }
    else {
      this.content = originalBefore
    }

    newChunk.next = this.next
    if (newChunk.next)
      newChunk.next.previous = newChunk
    newChunk.previous = this
    this.next = newChunk

    return newChunk
  }

  toString(): string {
    return this.intro + this.content + this.outro