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• [DIR] ..
• [FILE] apply-extends.js
• [FILE] deprecate-config.js
• [FILE] make-file-finder.js
• [FILE] shallow-extend.js

Просмотр файла: apply-extends.js

"use strict";

const path = require("path");
const resolveFrom = require("resolve-from");
const { ValidationError } = require("@lerna/validation-error");
const { deprecateConfig } = require("./deprecate-config");
const { shallowExtend } = require("./shallow-extend");

module.exports.applyExtends = applyExtends;

/**
 * @param {{ [key: string]: unknown }} config
 * @param {string} cwd
 * @param {Set<string>} seen
 */
function applyExtends(config, cwd, seen = new Set()) {
  let defaultConfig = {};

  if ("extends" in config) {
    let pathToDefault;

    try {
      pathToDefault = resolveFrom(cwd, config.extends);
    } catch (err) {
      throw new ValidationError("ERESOLVED", "Config .extends must be locally-resolvable", err);
    }

    if (seen.has(pathToDefault)) {
      throw new ValidationError("ECIRCULAR", "Config .extends cannot be circular", seen);
    }

    seen.add(pathToDefault);

    // eslint-disable-next-line import/no-dynamic-require, global-require
    defaultConfig = require(pathToDefault);
    delete config.extends; // eslint-disable-line no-param-reassign

    deprecateConfig(defaultConfig, pathToDefault);

    defaultConfig = applyExtends(defaultConfig, path.dirname(pathToDefault), seen);
  }

  return shallowExtend(config, defaultConfig);
}

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