LoC reporter for Parcel/Brisk

package.json

@@ -43,8 +43,9 @@
   },
   "preconstruct": {
     "packages": [
-      "packages/react-changelogs",
       "packages/file-viewer",
+      "packages/parcel-reporter-loc",
+      "packages/react-changelogs",
       "packages/website"
     ]
   },
@@ -89,6 +90,11 @@
     "@mdx-js/loader": "^0.17.5",
     "@mdx-js/mdx": "^0.15.0",
     "@mdx-js/tag": "^0.17.5",
+    "@parcel/config-default": "2.0.0-alpha.1.1",
+    "@parcel/core": "2.0.0-alpha.1.1",
+    "@parcel/logger": "^2.0.0-alpha.1.1",
+    "@parcel/plugin": "^2.0.0-alpha.1.1",
+    "@parcel/utils": "^2.0.0-alpha.1.1",
     "@types/js-yaml": "^3.12.1",
     "@types/lodash": "^4.14.123",
     "@types/lodash.flatten": "^4.4.6",
@@ -124,6 +130,7 @@
     "lodash.snakecase": "^4.1.1",
     "next": "^8.0.4",
     "next-images": "^1.1.1",
+    "nullthrows": "^1.1.1",
     "outdent": "^0.7.0",
     "preconstruct": "^0.0.62",
     "pretty-proptypes": "^0.6.6",
@@ -197,4 +204,4 @@
     "ts-loader": "^5.3.3",
     "tti-polyfill": "^0.2.2"
   }
-}
+}

packages/parcel-reporter-loc/package.json

@@ -0,0 +1,20 @@
+{
+    "name": "@brisk-docs/parcel-reporter-loc",
+    "version": "2.0.0-alpha.0",
+    "main": "dist/parcel-reporter-loc.cjs.js",
+    "module": "dist/parcel-reporter-loc.esm.js",
+    "engines": {
+        "node": ">= 8.0.0",
+        "parcel": "^2.0.0-alpha.1.1"
+    },
+    "scripts": {
+        "test": "echo this package has no tests yet",
+        "test-ci": "yarn test"
+    },
+    "dependencies": {
+        "@parcel/logger": "^2.0.0-alpha.1.1",
+        "@parcel/plugin": "^2.0.0-alpha.1.1",
+        "@parcel/utils": "^2.0.0-alpha.1.1",
+        "nullthrows": "^1.1.1"
+    }
+}

packages/parcel-reporter-loc/src/index.js

@@ -0,0 +1,31 @@
+import { Reporter } from '@parcel/plugin';
+import Logger from '@parcel/logger';
+import lineCounter from './lineCounter';
+
+const LOG_LEVELS = {
+  none: 0,
+  error: 1,
+  warn: 2,
+  info: 3,
+  progress: 3,
+  success: 3,
+  verbose: 4,
+};
+
+export default new Reporter({
+  async report(event, options) {
+    let logLevelFilter = options.logLevel || 'info';
+
+    if (
+      event.type !== 'buildSuccess' ||
+      LOG_LEVELS[logLevelFilter] < LOG_LEVELS.info
+    ) {
+      return;
+    }
+
+    event.bundleGraph.getBundles();
+    Logger.info(
+      'Number of lines: ' + (await lineCounter(event.bundleGraph.getBundles())),
+    );
+  },
+});

packages/parcel-reporter-loc/src/lineCounter.js

@@ -0,0 +1,71 @@
+const path = require('path');
+const fs = require('fs');
+const { PromiseQueue } = require('@parcel/utils');
+const os = require('os');
+const util = require('util');
+
+const exists = util.promisify(fs.exists);
+
+const runtimesPath = path.resolve('../../runtimes');
+
+const lineCounter = async bundles => {
+  let set = new Set();
+
+  for (let bundle of bundles) {
+    bundle.traverseAssets(asset => {
+      let { filePath } = asset;
+
+      if (filePath != null && !filePath.startsWith(runtimesPath)) {
+        set.add(filePath);
+      }
+    });
+  }
+
+  let queue = new PromiseQueue({ maxConcurrent: os.cpus().length });
+  let lineCount = 0;
+  for (let assetPath of set) {
+    queue
+      .add(() => countLinesInFile(assetPath))
+      .then(count => (lineCount += count));
+  }
+
+  await queue.run();
+  return lineCount;
+};
+
+const NEWLINE_CHAR = 10;
+const NULL_BYTE = 0; // Only appears in binary files
+const countLinesInFile = async filePath => {
+  // Parcel sometimes assigns filePaths to assets that don't exist
+  if (!(await exists(filePath))) {
+    return 0;
+  }
+
+  return new Promise((resolve, reject) => {
+    let lineCount = 0;
+
+    let stream = fs
+      .createReadStream(filePath)
+      .on('data', buf => {
+        let i = -1;
+        lineCount--;
+
+        if (buf.includes(NULL_BYTE)) {
+          stream.destroy();
+          resolve(0);
+          return;
+        }
+
+        do {
+          i = buf.indexOf(NEWLINE_CHAR, i + 1);
+          lineCount++;
+        } while (i !== -1);
+      })
+      .on('end', () => {
+        resolve(lineCount);
+      })
+      .on('error', reject);
+  });
+};
+
+export default lineCounter;

packages/website/.parcelrc

@@ -0,0 +1,4 @@
+{
+  "extends": ["@parcel/config-default"],
+  "reporters": ["...", "@brisk-docs/parcel-reporter-loc"]
+}

packages/website/_app.js

@@ -1,26 +1,42 @@
-import React, { useState } from 'react';
+import React from 'react';
 import {
   BrowserRouter as Router,
   Switch,
   Route,
   Redirect,
 } from 'react-router-dom';
+import { asyncComponent } from 'react-async-component';
 
-const HackyLoader = ({ promise }) => {
-  const [Comp, setComp] = useState(null);
-  promise.then(res => setComp(res));
-  if (Comp) return <Comp.default />;
-  return <div>Loading</div>;
-};
+const AsyncLoadPages = promise =>
+  asyncComponent({
+    resolve: () => promise,
+    LoadingComponent: () => <div>Loading</div>,
+    ErrorComponent: ({ error }) => (
+      <div>There is an error. {error.message} </div>
+    ),
+  });
 
 export default () => (
   <Router>
     <Switch>
+      <Route exact path="/" component={AsyncLoadPages(import('./pages'))} />
       <Route
-        exact
-        path="/"
-        component={() => <HackyLoader promise={import('./pages')} />}
+        path="/healthcheck"
+        component={AsyncLoadPages(import('./pages/healthcheck.tsx'))}
       />
+      <Route
+        path="/index"
+        component={AsyncLoadPages(import('./pages/index.tsx'))}
+      />
+      <Route
+        path="/packages"
+        component={AsyncLoadPages(import('./pages/packages.tsx'))}
+      />
+      <Route
+        path="/readme"
+        component={AsyncLoadPages(import('./pages/readme.js'))}
+      />
+      <Redirect to="/" />
     </Switch>
   </Router>
 );

packages/website/package.json

@@ -47,6 +47,8 @@
     "dist"
   ],
   "dependencies": {
+    "@parcel/core": "2.0.0-alpha.1.1",
+    "@parcel/config-default": "2.0.0-alpha.1.1",
     "@atlaskit/avatar": "^14.1.8",
     "@atlaskit/breadcrumbs": "^8.0.0",
     "@atlaskit/button": "^8.2.4",
@@ -75,6 +77,7 @@
     "@babel/runtime": "^7.4.3",
     "@brisk-docs/file-viewer": "^0.2.3",
     "@brisk-docs/react-changelogs": "^0.1.9",
+    "@brisk-docs/parcel-reporter-loc": "2.0.0-alpha.0",
     "@emotion/core": "^10.0.9",
     "@emotion/styled": "^10.0.9",
     "@mdx-js/loader": "^0.17.5",
@@ -141,4 +144,4 @@
     "mock-fs": "^4.10.1",
     "ts-loader": "^5.3.3"
   }
-}
+}

scripts/link-parcel.js

@@ -1,44 +1,28 @@
 const fs = require('fs-extra');
 const path = require('path');
 
-function linkParcel() {
+async function linkParcel() {
   const parcelHome = process.argv[2];
 
   if (!parcelHome) {
     console.warn('no parcel home provided');
     return;
   }
+  const nodeModulesParcel = path.resolve(__dirname, '../node_modules/@parcel');
 
-  const parcelCore = path.resolve(parcelHome, 'packages', 'core', 'core');
-  const parcelConfig = path.resolve(
-    parcelHome,
-    'packages',
-    'configs',
-    'default',
-  );
-  const nodeCore = path.resolve(
-    process.cwd(),
-    'node_modules',
-    '@parcel',
-    'core',
-  );
-  const nodeConfig = path.resolve(
-    process.cwd(),
-    'node_modules',
-    '@parcel',
-    'config-default',
-  );
+  try {
+    await fs.remove(nodeModulesParcel);
+    await fs.ensureSymlink(
+      path.resolve(parcelHome, 'node_modules/@parcel'),
+      nodeModulesParcel,
+    );
+  } catch (e) {
+    console.error(e);
+  }
 
-  Promise.all([
-    fs.ensureSymlink(parcelCore, nodeCore),
-    fs.ensureSymlink(parcelConfig, nodeConfig),
-  ])
-    .then(() => {
-      console.log(
-        'symlink to parcel should have been successful. Good luck deving!',
-      );
-    })
-    .catch(e => console.error(e));
+  console.log(
+    'symlink to parcel should have been successful. Good luck deving!',
+  );
 }
 
 linkParcel();