fix(cli): Redirect messages to stderr

Author: magic-akari

packages/cli/src/swc/dir.ts

@@ -1,6 +1,8 @@
 import { existsSync, promises } from "fs";
 import { dirname, resolve } from "path";
 import Piscina from "piscina";
+import { stderr } from "process";
+import { format } from "util";
 import { CompileStatus } from "./constants";
 import { Callbacks, CliOptions } from "./options";
 import { exists, getDest } from "./util";
@@ -208,22 +210,22 @@ async function initialCompilation(
         if (copied) {
             message += `copied ${copied} ${copied > 1 ? "files" : "file"}`;
         }
-        message += ` with swc (%dms)`;
+        message += format(" with swc (%dms)\n", duration.toFixed(2));
 
         if (callbacks?.onSuccess) {
             if (!failed) {
                 callbacks.onSuccess({ duration, compiled, copied });
             }
         } else if (!quiet) {
-            console.log(message, duration.toFixed(2));
+            stderr.write(message);
         }
     }
 
     if (failed) {
         if (callbacks?.onFail) {
             callbacks.onFail({ duration, reasons });
         } else {
-            console.log(
+            console.error(
                 `Failed to compile ${failed} ${
                     failed !== 1 ? "files" : "file"
                 } with swc.`
@@ -316,9 +318,11 @@ async function watchCompilation(
                                 filename,
                             });
                         } else if (!quiet) {
-                            console.log(
-                                `Successfully compiled ${filename} with swc (%dms)`,
-                                duration.toFixed(2)
+                            stderr.write(
+                                format(
+                                    `Successfully compiled ${filename} with swc (%dms)\n`,
+                                    duration.toFixed(2)
+                                )
                             );
                         }
                     }
@@ -353,9 +357,11 @@ async function watchCompilation(
                                 filename,
                             });
                         } else if (!quiet) {
-                            console.log(
-                                `Successfully copied ${filename} with swc (%dms)`,
-                                duration.toFixed(2)
+                            stderr.write(
+                                format(
+                                    `Successfully copied ${filename} with swc (%dms)\n`,
+                                    duration.toFixed(2)
+                                )
                             );
                         }
                     }

packages/cli/src/swc/util.ts

@@ -2,6 +2,7 @@ import * as swc from "@swc/core";
 import slash from "slash";
 import { mkdirSync, writeFileSync, promises } from "fs";
 import { dirname, join, relative } from "path";
+import { stderr } from "process";
 
 export async function exists(path: string): Promise<boolean> {
     let pathExists = true;
@@ -113,10 +114,10 @@ export function assertCompilationResult<T>(
     }
     if (!quiet && compiled + copied > 0) {
         const copyResult = copied === 0 ? " " : ` (copied ${copied}) `;
-        console.info(
+        stderr.write(
             `Successfully compiled ${compiled} ${
                 compiled !== 1 ? "files" : "file"
-            }${copyResult}with swc.`
+            }${copyResult}with swc.\n`
         );
     }