Class LinesIterator

repos/effect/packages/effect/src/String.ts:1166–1211

      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"`
 * or `"\n"`).
 */
const isLineBreak = (char: string): boolean => {
  const code = char.charCodeAt(0)
  return code === CR || code === LF
}

/**
 * Checks whether the provided characters combine to form a carriage return/line-feed
 * (i.e. `"\r\n"`).
 */
const isLineBreak2 = (char0: string, char1: string): boolean => char0.charCodeAt(0) === CR && char1.charCodeAt(0) === LF

const linesSeparated = (self: string, stripped: boolean): LinesIterator => new LinesIterator(self, stripped)

/**
 * Normalizes a string by splitting it into word parts, transforming each part,
 * and joining the parts with a configurable delimiter.
 *
 * **When to use**
 *
 * Use when you need custom word-case output with a delimiter or part transform
 * that the fixed case helpers do not provide.
 *
 * @see {@link pascalCase} for fixed PascalCase output
 * @see {@link camelCase} for fixed lower-initial camelCase output
 * @see {@link constantCase} for fixed uppercase underscore-separated output
 * @see {@link kebabCase} for fixed lowercase hyphen-separated output