feast/src/game/interface.ts

export interface LogEntry {
    render: () => string[];
}

export class LogLines implements LogEntry {
    lines: string[]

    constructor (...lines: string[]) {
      this.lines = lines
    }

    render (): string[] {
      return this.lines
    }
}

export class CompositeLog implements LogEntry {
    entries: LogEntry[]

    constructor (...entries: LogEntry[]) {
      this.entries = entries
    }

    render (): string[] {
      return this.entries.flatMap(e => e.render())
    }
}