babel-plugin-transform-modules-ui5/dist/classes/helpers/imports.js

An unofficial babel plugin for SAP UI5.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getImportDeclaration = getImportDeclaration;
exports.saveImports = void 0;
var _core = require("@babel/core");
let importDeclarations = {};
const saveImports = file => {
  // save all import declarations before "unneeded" ones are removed by the TypeScript plugin
  importDeclarations[file.opts.filename] = file.ast.program.body.filter(_core.types.isImportDeclaration); // right now even the removed import still exists later and can be re-added. Otherwise do: .map(decl => t.cloneNode(decl));
};

// can be called from visitor to access previously present declarations
exports.saveImports = saveImports;
function getImportDeclaration(filename, typeName) {
  if (!filename || !typeName) {
    return null;
  }
  const typeNameParts = typeName.split(".");

  // find the declaration importing the typeName among the collected import declarations in this file
  const filteredDeclarations = importDeclarations[filename].filter(importDeclaration => {
    // each import declaration can import several entities, so let's check all of them
    for (let specifier of importDeclaration.specifiers) {
      if ((_core.types.isImportDefaultSpecifier(specifier) || _core.types.isImportNamespaceSpecifier(specifier)) && specifier.local.name === typeNameParts[0]) {
        // if the import is default, then the typeName should only have one part (the import name)
        return true;
      } else if (_core.types.isImportSpecifier(specifier) && specifier.imported.name === typeNameParts[typeNameParts.length - 1]) {
        // If the import is named, then the last part of the typeName should match the imported name
        return true;
      }
    }
  });
  return filteredDeclarations[0]; // should be exactly one
}