fixed async function issue nodejs#30090

Author: manas2297

tools/doc/generate.js

@@ -19,18 +19,18 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-'use strict';
+"use strict";
 
-const fs = require('fs');
-const path = require('path');
-const unified = require('unified');
-const markdown = require('remark-parse');
-const remark2rehype = require('remark-rehype');
-const raw = require('rehype-raw');
-const htmlStringify = require('rehype-stringify');
+const fs = require("fs");
+const path = require("path");
+const unified = require("unified");
+const markdown = require("remark-parse");
+const remark2rehype = require("remark-rehype");
+const raw = require("rehype-raw");
+const htmlStringify = require("rehype-stringify");
 
-const html = require('./html');
-const json = require('./json');
+const html = require("./html");
+const json = require("./json");
 
 // Parse the args.
 // Don't use nopt or whatever for this. It's simple enough.
@@ -41,16 +41,16 @@ let nodeVersion = null;
 let outputDir = null;
 let apilinks = {};
 
-args.forEach((arg) => {
-  if (!arg.startsWith('--')) {
+args.forEach(arg => {
+  if (!arg.startsWith("--")) {
     filename = arg;
-  } else if (arg.startsWith('--node-version=')) {
-    nodeVersion = arg.replace(/^--node-version=/, '');
-  } else if (arg.startsWith('--output-directory=')) {
-    outputDir = arg.replace(/^--output-directory=/, '');
-  } else if (arg.startsWith('--apilinks=')) {
-    const linkFile = arg.replace(/^--apilinks=/, '');
-    const data = fs.readFileSync(linkFile, 'utf8');
+  } else if (arg.startsWith("--node-version=")) {
+    nodeVersion = arg.replace(/^--node-version=/, "");
+  } else if (arg.startsWith("--output-directory=")) {
+    outputDir = arg.replace(/^--output-directory=/, "");
+  } else if (arg.startsWith("--apilinks=")) {
+    const linkFile = arg.replace(/^--apilinks=/, "");
+    const data = fs.readFileSync(linkFile, "utf8");
     if (!data.trim()) {
       throw new Error(`${linkFile} is empty`);
     }
@@ -61,33 +61,37 @@ args.forEach((arg) => {
 nodeVersion = nodeVersion || process.version;
 
 if (!filename) {
-  throw new Error('No input file specified');
+  throw new Error("No input file specified");
 } else if (!outputDir) {
-  throw new Error('No output directory specified');
+  throw new Error("No output directory specified");
 }
 
+const fileTask = async () => {
+  try {
+    const input = await fs.readFile(filename, "utf8");
+    const content = unified()
+      .use(markdown)
+      .use(html.preprocessText)
+      .use(json.jsonAPI, { filename })
+      .use(html.firstHeader)
+      .use(html.preprocessElements, { filename })
+      .use(html.buildToc, { filename, apilinks })
+      .use(remark2rehype, { allowDangerousHTML: true })
+      .use(raw)
+      .use(htmlStringify)
+      .process(input);
 
-fs.readFile(filename, 'utf8', async (er, input) => {
-  if (er) throw er;
-
-  const content = unified()
-    .use(markdown)
-    .use(html.preprocessText)
-    .use(json.jsonAPI, { filename })
-    .use(html.firstHeader)
-    .use(html.preprocessElements, { filename })
-    .use(html.buildToc, { filename, apilinks })
-    .use(remark2rehype, { allowDangerousHTML: true })
-    .use(raw)
-    .use(htmlStringify)
-    .processSync(input);
-
-  const basename = path.basename(filename, '.md');
-
-  const myHtml = await html.toHTML({ input, content, filename, nodeVersion });
-  const htmlTarget = path.join(outputDir, `${basename}.html`);
-  fs.writeFileSync(htmlTarget, myHtml);
-
-  const jsonTarget = path.join(outputDir, `${basename}.json`);
-  fs.writeFileSync(jsonTarget, JSON.stringify(content.json, null, 2));
-});
+    const basename = path.basename(filename, ".md");
+    const myHtml = await html.toHTML({ input, content, filename, nodeVersion });
+    const htmlTarget = path.join(outputDir, `${basename}.html`);
+    const data = fs.writeFile(htmlTarget, myHtml);
+    const jsonTarget = path.join(outputDir, `${basename}.json`);
+    const data_ = fs.writeFile(
+      jsonTarget,
+      JSON.stringify(content.json, null, 2)
+    );
+  } catch (err) {
+    console.error(err);
+  }
+};
+fileTask();