@pipepack/enhanced-resolver/lib/observable/description-file.js

yet, reimplement enhanced-resolve with the idea 'simple is best'.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.pickDescriptionFile = pickDescriptionFile;
exports.pickMainField = pickMainField;

var _path = require("path");

var _rxjs = require("rxjs");

var _operators = require("rxjs/operators");

var _json = require("./json");

var _assign = require("../utils/assign");

// package
// internal

/**
 * try to load description file as json, pass through payload, take the highest priority description file
 */
function pickDescriptionFile(request, fs, descriptionFiles) {
  return (0, _rxjs.from)(descriptionFiles).pipe((0, _operators.concatMap)(descriptionFile => (0, _json.json)(fs, (0, _path.join)(request.context, request.referencePathName, descriptionFile))), // only care about the first match
  (0, _operators.take)(1));
}
/**
 * compose main field into request
 */


function pickMainField(request, descriptions, mainFields) {
  // 1. extract description content
  return (0, _rxjs.from)(mainFields).pipe((0, _operators.filter)(field => typeof descriptions[field] === 'string'), (0, _operators.map)(field => (0, _assign.assign)(request, {
    referencePathName: (0, _path.join)(request.referencePathName, descriptions[field])
  })), // take priority main field
  (0, _operators.take)(1));
}
//# sourceMappingURL=description-file.js.map