q

Author: stopsopa

transpile.ignore

@@ -4,6 +4,7 @@ tsc.ignore.ts
 node_modules
 bundle.ts
 transpile.ts
+transpile_pipe.ts
 es.ts
 bash/tee.ts
 vitest.config.ts

transpile.sh

@@ -33,4 +33,4 @@ find . -type d \( \
 f -name "*.ts" \
 -print \
 | node gitignore.js "${IGNORE_FILE}" \
-| /bin/bash ts.sh transpile.ts "$@"
+| /bin/bash ts.sh transpile.ts "$@" | node transpile_pipe.ts

transpile.ts

@@ -3,6 +3,8 @@
  */
 import * as esbuild from "esbuild";
 import readline from "readline";
+import path from "path";
+import fs from "fs";
 
 const log = (...args: any) => console.log("transpile.ts:", ...args);
 
@@ -46,10 +48,35 @@ const options: esbuild.BuildOptions = {
   platform: "node",
   format: "esm",
   target: "node20",
-  logLevel: "info",
+  logLevel: "warning",
   logOverride: {
     "direct-eval": "silent",
   },
+  plugins: [
+    {
+      name: "watch-reporter",
+      setup(build) {
+        const mtimes = new Map<string, number>();
+        let isInitialBuild = true;
+        build.onEnd((result) => {
+          if (result.errors.length > 0) return;
+          const changed: string[] = [];
+          for (const ep of entryPoints) {
+            try {
+              const stats = fs.statSync(ep);
+              const lastMtime = mtimes.get(ep);
+              if (lastMtime !== undefined && stats.mtimeMs > lastMtime) {
+                changed.push(ep);
+              }
+              mtimes.set(ep, stats.mtimeMs);
+            } catch (e) {}
+          }
+          changed.forEach((file) => console.log(`transpiled ${file}`));
+          isInitialBuild = false;
+        });
+      },
+    },
+  ],
 };
 
 if (watch) {

transpile_pipe.ts

@@ -0,0 +1,47 @@
+import readline from "readline";
+import { exec } from "child_process";
+import fs from "fs";
+
+if (process.stdin.isTTY) {
+  console.log(`
+Usage:
+  node transpile.ts --watch | node transpile_pipe.ts
+
+Description:
+  Listen for "transpiled [file].ts" on stdin.
+  Run prettier on "[file].js".
+  Prefix stdin with "stdin: ".
+  Print "frmtd: [file].js" on success.
+`);
+  process.exit(0);
+}
+
+const rl = readline.createInterface({
+  input: process.stdin,
+  terminal: false,
+});
+
+rl.on("line", (line) => {
+  console.log(`stdin: ${line}`);
+
+  const match = line.match(/^transpiled (.*\.ts)$/);
+  if (match) {
+    const tsFile = match[1];
+    const jsFile = tsFile.replace(/\.ts$/, ".js");
+
+    if (fs.existsSync(jsFile)) {
+      const cmd = `/bin/bash node_modules/.bin/prettier --config prettier.config.cjs --write ${jsFile}`;
+      exec(cmd, (error, stdout, stderr) => {
+        if (error) {
+          console.error(`error: ${error.message}`);
+          return;
+        }
+        if (stderr) {
+          console.error(`stderr: ${stderr}`);
+          return;
+        }
+        console.log(`frmtd: ${jsFile}`);
+      });
+    }
+  }
+});