mirror of https://github.com/status-im/metro.git
packager ModuleTransport.js: @flow
Reviewed By: cpojer Differential Revision: D4166900 fbshipit-source-id: 0b8c1730f00f9a9d4a17586967edae8cbd4f296b
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@ -18,6 +18,7 @@ const _ = require('lodash');
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const base64VLQ = require('./base64-vlq');
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const crypto = require('crypto');
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import type {SourceMap, CombinedSourceMap, MixedSourceMap} from '../lib/SourceMap';
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import type {GetSourceOptions, FinalizeOptions} from './BundleBase';
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const SOURCEMAPPING_URL = '\n\/\/# sourceMappingURL=';
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@ -53,14 +54,18 @@ class Bundle extends BundleBase {
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}
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addModule(
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/**
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* $FlowFixMe: this code is inherently incorrect, because it modifies the
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* signature of the base class function "addModule". That means callsites
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* using an instance typed as the base class would be broken. This must be
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* refactored.
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*/
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resolver: {wrapModule: (options: any) => Promise<{code: any, map: any}>},
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resolutionResponse: mixed,
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module: mixed,
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/* $FlowFixMe: erroneous change of signature. */
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moduleTransport: ModuleTransport,
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/* $FlowFixMe: this code is inherently incorrect, because it modifies the
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* signature of the base class function "addModule", originally returning
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* a number. That means callsites using an instance typed as the base class
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* would be broken. This must be refactored. */
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/* $FlowFixMe: erroneous change of signature. */
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): Promise<void> {
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const index = super.addModule(moduleTransport);
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return resolver.wrapModule({
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@ -170,7 +175,7 @@ class Bundle extends BundleBase {
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* that makes use of of the `sections` field to combine sourcemaps by adding
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* an offset. This is supported only by Chrome for now.
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*/
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_getCombinedSourceMaps(options) {
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_getCombinedSourceMaps(options): CombinedSourceMap {
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const result = {
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version: 3,
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file: this._getSourceMapFile(),
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@ -186,6 +191,7 @@ class Bundle extends BundleBase {
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}
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if (options.excludeSource) {
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/* $FlowFixMe: assume the map is not empty if we got here. */
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if (map.sourcesContent && map.sourcesContent.length) {
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map = Object.assign({}, map, {sourcesContent: []});
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}
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@ -193,6 +199,7 @@ class Bundle extends BundleBase {
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result.sections.push({
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offset: { line: line, column: 0 },
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/* $FlowFixMe: assume the map is not empty if we got here. */
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map: map,
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});
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line += module.code.split('\n').length;
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@ -201,7 +208,7 @@ class Bundle extends BundleBase {
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return result;
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}
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getSourceMap(options: {excludeSource?: boolean}) {
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getSourceMap(options: {excludeSource?: boolean}): MixedSourceMap {
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super.assertFinalized();
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if (this._shouldCombineSourceMaps) {
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@ -336,11 +343,12 @@ class Bundle extends BundleBase {
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BundleBase.fromJSON(bundle, json);
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/* $FlowFixMe: this modifies BundleBase#fromJSON() signature. */
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return bundle;
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}
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}
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function generateSourceMapForVirtualModule(module) {
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function generateSourceMapForVirtualModule(module): SourceMap {
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// All lines map 1-to-1
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let mappings = 'AAAA;';
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@ -379,6 +387,7 @@ function * filter(iterator, predicate) {
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function * subtree(moduleTransport: ModuleTransport, moduleTransportsByPath, seen = new Set()) {
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seen.add(moduleTransport.id);
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/* $FlowFixMe: there may not be a `meta` object */
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for (const [, {path}] of moduleTransport.meta.dependencyPairs || []) {
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const dependency = moduleTransportsByPath.get(path);
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if (dependency && !seen.has(dependency.id)) {
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@ -420,6 +429,7 @@ function createGroups(ramGroups: Array<string>, lazyModules) {
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return [
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root.id,
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// `subtree` yields the IDs of all transitive dependencies of a module
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/* $FlowFixMe: assumes the module is always in the Map */
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new Set(subtree(byPath.get(root.sourcePath), byPath)),
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];
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})
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@ -329,7 +329,7 @@ class Bundler {
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};
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const finalizeBundle = ({bundle: finalBundle, transformedModules, response, modulesByName}: {
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bundle: Bundle,
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transformedModules: Array<{module: Module, transformed: {}}>,
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transformedModules: Array<{module: Module, transformed: ModuleTransport}>,
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response: ResolutionResponse,
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modulesByName: {[name: string]: Module},
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}) =>
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@ -5,10 +5,42 @@
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @flow
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*/
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'use strict';
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function ModuleTransport(data) {
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import type {SourceMap} from './SourceMap';
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type Metadata = {
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dependencyPairs?: Array<[mixed, {path: string}]>,
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preloaded?: boolean,
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};
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class ModuleTransport {
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name: string;
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id: string | number;
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code: string;
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sourceCode: string;
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sourcePath: string;
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virtual: ?boolean;
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meta: ?Metadata;
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polyfill: ?boolean;
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map: ?SourceMap;
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constructor(data: {
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name: string,
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id: string | number,
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code: string,
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sourceCode: string,
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sourcePath: string,
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virtual?: ?boolean,
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meta?: ?Metadata,
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polyfill?: ?boolean,
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map?: ?SourceMap,
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}) {
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this.name = data.name;
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assertExists(data, 'id');
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@ -31,6 +63,8 @@ function ModuleTransport(data) {
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Object.freeze(this);
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}
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}
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module.exports = ModuleTransport;
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function assertExists(obj, field) {
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@ -0,0 +1,33 @@
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/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @flow
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*/
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'use strict';
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type SourceMapBase = {
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version: number,
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file: string,
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};
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export type SourceMap = SourceMapBase & {
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sources: Array<string>,
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names: Array<string>,
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mappings: string,
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sourcesContent: Array<string>,
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};
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export type CombinedSourceMap = SourceMapBase & {
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sections: Array<{
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offset: {line: number, column: number},
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map: SourceMap,
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}>,
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};
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export type MixedSourceMap = SourceMap | CombinedSourceMap;
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