cli: abort on unknown options (#729)

CHANGELOG.md

@@ -1,5 +1,10 @@
 # sapper changelog
 
+## 0.27.4
+
+* Update devalue
+
+
 ## 0.27.3
 
 * Accommodate Svelte 3.5.0

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "sapper",
-  "version": "0.27.2",
+  "version": "0.27.3",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1243,9 +1243,9 @@
       }
     },
     "devalue": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/devalue/-/devalue-1.1.0.tgz",
-      "integrity": "sha512-mKj+DaZuxevfmjI78VdlkBr+NDmwaDAKQz0t5RDSmhwBn6m5z82KDnVRKVFeUvlMOmI1fzkAUx4USdqGGhas6g==",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/devalue/-/devalue-1.1.1.tgz",
+      "integrity": "sha512-ULnighb7iXHiG+T3hoePM8LfaJWuMV/8TBYcdkYD2eOSRtGfZGVtc/66+gIx6BHRVOwEWGfUsMwzcDF7LxRwgw==",
       "dev": true
     },
     "diff": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sapper",
-  "version": "0.27.3",
+  "version": "0.27.4",
   "description": "Military-grade apps, engineered by Svelte",
   "bin": {
     "sapper": "./sapper"
@@ -31,7 +31,7 @@
     "agadoo": "^1.0.1",
     "cheap-watch": "^1.0.2",
     "cookie": "^0.4.0",
-    "devalue": "^1.1.0",
+    "devalue": "^1.1.1",
     "eslint": "^5.16.0",
     "eslint-plugin-import": "^2.17.3",
     "kleur": "^3.0.3",

src/cli.ts

@@ -262,7 +262,7 @@ prog.command('export [dest]')
 		}
 	});
 
-prog.parse(process.argv);
+prog.parse(process.argv, { unknown: (arg: string) => `Unknown option: ${arg}` });
 
 
 async function _build(