@backstage/backend-test-utils/dist/services/MockRootLoggerService.cjs.js

Test helpers library for Backstage backends

'use strict';

const levels = {
  none: 0,
  error: 1,
  warn: 2,
  info: 3,
  debug: 4
};
class MockRootLoggerService {
  #level;
  #meta;
  static create(options) {
    const level = options?.level ?? "none";
    if (!(level in levels)) {
      throw new Error(`Invalid log level '${level}'`);
    }
    return new MockRootLoggerService(levels[level], {});
  }
  error(message, meta) {
    this.#log("error", message, meta);
  }
  warn(message, meta) {
    this.#log("warn", message, meta);
  }
  info(message, meta) {
    this.#log("info", message, meta);
  }
  debug(message, meta) {
    this.#log("debug", message, meta);
  }
  child(meta) {
    return new MockRootLoggerService(this.#level, { ...this.#meta, ...meta });
  }
  constructor(level, meta) {
    this.#level = level;
    this.#meta = meta;
  }
  #log(level, message, meta) {
    const levelValue = levels[level] ?? 0;
    if (levelValue <= this.#level) {
      const labels = Object.entries(this.#meta).map(([key, value]) => `${key}=${value}`).join(",");
      console[level](`${labels} ${message}`, meta);
    }
  }
}

exports.MockRootLoggerService = MockRootLoggerService;
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