Print logs to stderr

[gonzaloriestra]

WHY are these changes introduced?

Fixes #3863

WHAT is this pull request doing?

How to test your changes?

Post-release steps

Measuring impact

How do we know this change was effective? Please choose one:

• n/a - this doesn't need measurement, e.g. a linting rule or a bug-fix
• Existing analytics will cater for this addition
• PR includes analytics changes to measure impact

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes

[github-actions]

Unused dependencies (1)

Filename	dependencies
packages/app/package.json	micromatch

Unused devDependencies (1)

Filename	devDependencies
packages/app/package.json	@types/micromatch

Unused types (1)

Filename	types
packages/app/src/cli/services/build/extension.ts	BuildFunctionExtensionOptions

[github-actions]

Differences in type declarations

We detected differences in the type declarations generated by Typescript for this branch compared to the baseline ('main' branch). Please, review them to ensure they are backward-compatible. Here are some important things to keep in mind:

• Some seemingly private modules might be re-exported through public modules.
• If the branch is behind main you might see odd diffs, rebase main into this branch.

New type declarations

We found no new type declarations in this PR

Existing type declarations

packages/cli-kit/dist/public/node/output.d.ts

@@ -141,19 +141,19 @@ export interface OutputProcess {
     action: (stdout: Writable, stderr: Writable, signal: AbortSignal) => Promise<void>;
 }
 /**
- * Prints a log message in the console.
+ * Prints a log message in the console to stdout.
  *
  * @param message - The message to print.
  */
 export declare function consoleLog(message: string): void;
 /**
- * Prints an error message in the console.
+ * Prints an error message in the console to stderr.
  *
  * @param message - The message to print.
  */
 export declare function consoleError(message: string): void;
 /**
- * Prints a warning message in the console.
+ * Prints a warning message in the console to stderr.
  *
  * @param message - The message to print.
  */

[charlespwd]

May I suggest a export function output(content: outputMessage, logger: Logger = consoleLog): void {

?

That way all the output{log,warn,error} would all go to stderr and we'd make it explicit which one goes to stdout?

STDOUT = scriptable output
STDERR = logging