Class LinesIterator

packages/effect/src/String.ts:1138–1183

export const kebabToSnake = (self: string): string => self.replace(/-/g, "_")

class LinesIterator implements IterableIterator<string> {
  private index: number
  private readonly length: number
  readonly s: string
  readonly stripped: boolean

  constructor(
    s: string,
    stripped: boolean = false
  ) {
    this.s = s
    this.stripped = stripped
    this.index = 0
    this.length = s.length
  }

  next(): IteratorResult<string> {
    if (this.done) {
      return { done: true, value: undefined }
    }
    const start = this.index
    while (!this.done && !isLineBreak(this.s[this.index]!)) {
      this.index = this.index + 1
    }
    let end = this.index
    if (!this.done) {
      const char = this.s[this.index]!
      this.index = this.index + 1
      if (!this.done && isLineBreak2(char, this.s[this.index]!)) {
        this.index = this.index + 1
      }
      if (!this.stripped) {
        end = this.index
      }
    }
    return { done: false, value: this.s.substring(start, end) }
  }

  [Symbol.iterator](): IterableIterator<string> {
    return new LinesIterator(this.s, this.stripped)
  }

  private get done(): boolean {
    return this.index >= this.length
  }
}

/**
 * Checks whether the provided character is a line break character (i.e. either `"\r"`