chore(core): monorepo, esm targeting, improved management (#8707)

packages/webpack/unit-testing-config-loader.js

@@ -0,0 +1,46 @@
+const { join, relative } = require("path");
+const { existsSync } = require("fs");
+const { convertSlashesInPath } = require("./helpers/projectHelpers");
+
+function getRunnerFullPath(projectRoot) {
+    const runnerRootPath = join(projectRoot, "node_modules", "@nativescript/unit-test-runner");
+    const runnerAppPath = join(runnerRootPath, "app");
+    const result = existsSync(runnerAppPath) ? runnerAppPath : runnerRootPath;
+
+    return result;
+}
+
+module.exports = function ({ appFullPath, projectRoot, angular, rootPagesRegExp }) {
+    // TODO: Consider to use the files property from karma.conf.js
+    const testFilesRegExp = /tests\/.*\.(ts|js)/;
+    const runnerFullPath = getRunnerFullPath(projectRoot);
+    const runnerRelativePath = convertSlashesInPath(relative(appFullPath, runnerFullPath));
+    const appCssFilePath = convertSlashesInPath(join(runnerRelativePath, "app.css"));
+    let source = `
+        require("@nativescript/core/bundle-entry-points");
+        const runnerContext = require.context("${runnerRelativePath}", true, ${rootPagesRegExp});
+        global.registerWebpackModules(runnerContext);
+        global.registerModule("${appCssFilePath}", () => require("${appCssFilePath}"));
+        require("@nativescript/core").Application.setCssFileName("${appCssFilePath}");
+    `;
+
+    if (angular) {
+        source += `
+            const context = require.context("~/", true, ${testFilesRegExp});
+            global.registerWebpackModules(context);
+        `;
+    } else {
+        const registerModules = new RegExp(`(${rootPagesRegExp.source})|(${testFilesRegExp.source})`);
+        source += `
+            const context = require.context("~/", true, ${registerModules});
+            global.registerWebpackModules(context);
+        `;
+    }
+
+    const runnerEntryPointPath = convertSlashesInPath(join(runnerRelativePath, "bundle-app.js"));
+    source += `
+        require("${runnerEntryPointPath}");
+    `;
+
+    return source;
+}