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// tslint:disable:no-eval
import {dirname, join} from 'path';
import {readFileSync, writeFileSync} from 'fs';
import {sync as glob} from 'glob';
/** Finds all JavaScript files in a directory and inlines all resources of Angular components. */
export function inlineResourcesForDirectory(folderPath: string) {
glob(join(folderPath, '**/*.js')).forEach(filePath => inlineResources(filePath));
}
/** Inlines the external resources of Angular components of a file. */
export function inlineResources(filePath: string) {
let fileContent = readFileSync(filePath, 'utf-8');
fileContent = inlineTemplate(fileContent, filePath);
fileContent = inlineStyles(fileContent, filePath);
fileContent = removeModuleId(fileContent);
writeFileSync(filePath, fileContent, 'utf-8');
}
/** Inlines the templates of Angular components for a specified source file. */
function inlineTemplate(fileContent: string, filePath: string) {
return fileContent.replace(/templateUrl:\s*'([^']+?\.html)'/g, (_match, templateUrl) => {
const templatePath = join(dirname(filePath), templateUrl);
const templateContent = loadResourceFile(templatePath);
return `template: "${templateContent}"`;
});
}
/** Inlines the external styles of Angular components for a specified source file. */
function inlineStyles(fileContent: string, filePath: string) {
return fileContent.replace(/styleUrls:\s*(\[[\s\S]*?])/gm, (_match, styleUrlsValue) => {
// The RegExp matches the array of external style files. This is a string right now and
// can to be parsed using the `eval` method. The value looks like "['AAA.css', 'BBB.css']"
const styleUrls = eval(styleUrlsValue) as string[];
const styleContents = styleUrls
.map(url => join(dirname(filePath), url))
.map(path => loadResourceFile(path));
return `styles: ["${styleContents.join(' ')}"]`;
});
}
/** Remove every mention of `moduleId: module.id` */
function removeModuleId(fileContent: string) {
return fileContent.replace(/\s*moduleId:\s*module\.id\s*,?\s*/gm, '');
}
/** Loads the specified resource file and drops line-breaks of the content. */
function loadResourceFile(filePath: string): string {
return readFileSync(filePath, 'utf-8')
.replace(/([\n\r]\s*)+/gm, ' ')
.replace(/"/g, '\\"');
}