@nativescript/core
Version:
A JavaScript library providing an easy to use api for interacting with iOS and Android platform APIs.
119 lines • 4.67 kB
JavaScript
import { Application } from '../application';
import * as fs from '../file-system';
import { Trace } from '../trace';
const cache = new Set();
let initialized = false;
function register(name, loader) {
if (Trace.isEnabled()) {
Trace.write(`[Compat] Register module: ${name}`, Trace.categories.ModuleNameResolver);
}
global.registerModule(name, loader);
if (name.startsWith('tns_modules')) {
const nonTnsModulesName = name.substr('tns_modules'.length + 1);
if (Trace.isEnabled()) {
Trace.write(`[Compat] Register module: ${nonTnsModulesName}`, Trace.categories.ModuleNameResolver);
}
global.registerModule(nonTnsModulesName, loader);
}
}
function processFile(file) {
const filePathRelativeToApp = file.path.substr(fs.knownFolders.currentApp().path.length + 1);
const loadContent = () => file.readTextSync();
switch (file.extension.toLocaleLowerCase()) {
case '.js': {
const noExtPath = filePathRelativeToApp.substr(0, filePathRelativeToApp.length - '.js'.length);
register(filePathRelativeToApp, function () {
return global.require(file.path);
});
register(noExtPath, function () {
return global.require(file.path);
});
break;
}
case '.css':
register(filePathRelativeToApp, loadContent);
break;
case '.xml':
register(filePathRelativeToApp, loadContent);
break;
}
if (file.name === 'package.json') {
const json = global.require(file.path);
if (json.main) {
const name = filePathRelativeToApp.substr(0, filePathRelativeToApp.length - 'package.json'.length - 1);
const requirePath = fs.path.join(file.parent.path, json.main);
register(name, () => global.require(requirePath));
}
}
}
/**
* Processes folder and returns true if folder was not empty.
* @param Folder path
*/
function processFolder(path) {
if (cache.has(path)) {
return true;
}
cache.add(path);
if (Trace.isEnabled()) {
Trace.write(`[Compat] Processing folder: ${path}`, Trace.categories.ModuleNameResolver);
}
let folderEmpty = true;
if (fs.Folder.exists(path)) {
const folder = fs.Folder.fromPath(path);
folder.eachEntity((file) => {
if (file instanceof fs.File) {
processFile(file);
folderEmpty = false;
}
return true;
});
}
return !folderEmpty;
}
/**
* Registers loaders for all files from the containing folder with global.registerModule().
* Compatibility method for non-webpack workflow (like in playground).
* @param moduleName
*/
export function registerModulesFromFileSystem(moduleName) {
initialize();
let folderProcessed = false;
let parentFolderProcessed = false;
// moduleName is a folder with package.json
const path = fs.path.join(fs.knownFolders.currentApp().path, moduleName);
if (fs.Folder.exists(path)) {
folderProcessed = processFolder(path);
}
// moduleName is file - load all files in its parent folder
const parentName = moduleName.substr(0, moduleName.lastIndexOf(fs.path.separator));
const parentFolderPath = fs.path.join(fs.knownFolders.currentApp().path, parentName);
if (fs.Folder.exists(parentFolderPath)) {
parentFolderProcessed = processFolder(parentFolderPath);
}
// Return only if we processed the actual folder or its parent folder.
// If the parent folder is empty we should still check tns_modules
// as this might be just a name of a plugin (ex. "nativescript-ui-autocomplete")
if (folderProcessed || (parentFolderProcessed && parentName)) {
return;
}
// moduleName is a folder in tns_modules ex. "nativescript-ui-chart"
const tnsModulesPath = fs.path.join(fs.knownFolders.currentApp().path, 'tns_modules', moduleName);
if (fs.Folder.exists(tnsModulesPath)) {
processFolder(tnsModulesPath);
}
// moduleName a file in tns_modules/plugin. Avoid traversing the whole tns_modules folder if parentName is empty
if (parentName) {
const tnsParentFolderPath = fs.path.join(fs.knownFolders.currentApp().path, 'tns_modules', parentName);
if (fs.Folder.exists(tnsParentFolderPath)) {
processFolder(tnsParentFolderPath);
}
}
}
function initialize() {
if (!initialized) {
Application.on('livesync', (args) => cache.clear());
initialized = true;
}
}
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