Add the cli flag `--silent` to astro which sets astro and snowpack logging to output nothing (#613)

4 files changed, 16 insertions, 1 deletions

diff --git a/.changeset/pretty-windows-bow.md b/.changeset/pretty-windows-bow.md
new file mode 100644
index 000000000..ea6734e8b
--- /dev/null
+++ b/.changeset/pretty-windows-bow.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Add command line flag `--silent` to astro to set no output.
diff --git a/packages/astro/src/cli.ts b/packages/astro/src/cli.ts
index 2bf6fcbe8..65d55c120 100644
--- a/packages/astro/src/cli.ts
+++ b/packages/astro/src/cli.ts
@@ -78,6 +78,7 @@ function printHelp() {
   --no-sitemap          Disable sitemap generation (build only).
   --reload              Clean the cache, reinstalling dependencies.
   --verbose             Enable verbose logging
+  --silent              Disable logging
   --version             Show the version number and exit.
   --help                Show this help message.
 `);
diff --git a/packages/astro/src/logger.ts b/packages/astro/src/logger.ts
index 9123b4a2b..88f591b4d 100644
--- a/packages/astro/src/logger.ts
+++ b/packages/astro/src/logger.ts
@@ -159,4 +159,11 @@ function padStr(str: string, len: number) {
   return str + spaces;
 }
 
-export const defaultLogLevel: LoggerLevel = process.argv.includes('--verbose') ? 'debug' : 'info';
+export let defaultLogLevel: LoggerLevel;
+if (process.argv.includes('--verbose')) {
+  defaultLogLevel = 'debug';
+} else if (process.argv.includes('--silent')) {
+  defaultLogLevel = 'silent';
+} else {
+  defaultLogLevel = 'info';
+}
diff --git a/packages/astro/src/snowpack-logger.ts b/packages/astro/src/snowpack-logger.ts
index 9465bb138..1f6bc60a2 100644
--- a/packages/astro/src/snowpack-logger.ts
+++ b/packages/astro/src/snowpack-logger.ts
@@ -4,5 +4,7 @@ import { defaultLogLevel } from './logger.js';
 export function configureSnowpackLogger(logger: typeof snowpackLogger) {
   if (defaultLogLevel === 'debug') {
     logger.level = 'debug';
+  } else if (defaultLogLevel === 'silent') {
+    logger.level = 'silent';
   }
 }