babel-plugin-transform-assets-import-to-string/lib/index.js

Babel plugin that transforms image assets import and requires to urls / cdn

'use strict';

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

var _transform = require('./transform');

var _transform2 = _interopRequireDefault(_transform);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const defaultOptions = {
  baseUri: '',
  extensions: ['.gif', '.jpeg', '.jpg', '.png', '.svg'],
  flatten: false
};

function isRequireStatement(p) {
  const callee = p.get('callee');
  return callee.isIdentifier() && callee.equals('name', 'require');
}

function isValidArgument(p) {
  const arg = p.get('arguments')[0];
  return arg && arg.isStringLiteral();
}

function initOptions(cache, state) {
  if (cache) {
    return cache;
  }

  return Object.assign({}, defaultOptions, state.opts);
}

function transformAssets({ types: t }) {
  return {
    pre() {
      this.optionCache = null;
    },
    post() {
      this.optionCache = null;
    },
    visitor: {
      ImportDeclaration(p, state) {
        this.optionCache = initOptions(this.optionCache, state);

        (0, _transform2.default)({
          path: p,
          types: t,
          filename: state.file.opts.filename,
          value: p.node.source.value,
          callee: 'import'
        }, this.optionCache);
      },
      CallExpression(p, state) {
        if (isRequireStatement(p) && isValidArgument(p)) {
          const arg = p.get('arguments')[0];
          this.optionCache = initOptions(this.optionCache, state);

          (0, _transform2.default)({
            path: p,
            types: t,
            filename: state.file.opts.filename,
            value: arg.node.value,
            callee: 'require'
          }, this.optionCache);
        }
      }
    }
  };
}

exports.defaultOptions = defaultOptions;
exports.default = transformAssets;