Unset line width to allow arbitrarily long lines (#168)

* Increase line width to avoid reformatting yaml

* Add tests

* Set unlimited lineWidth

Author: prachirp

ts/kpt-functions/src/io.ts

@@ -36,6 +36,8 @@ const YAML_STYLE: DumpOptions = {
   // Either reason about not having 'undefined' in all cases OR
   // only skip 'undefined'.
   skipInvalid: true,
+  // unset lineWidth from default of 80 to avoid reformatting
+  lineWidth: -1,
 };
 
 /**

ts/kpt-functions/src/io_test.ts

@@ -466,6 +466,35 @@ results:
   severity: error
 `);
     });
+
+    it('preserves long lines', () => {
+      const result = stringify(
+        new Configs([
+          {
+            apiVersion: 'v1',
+            kind: 'Namespace',
+            metadata: {
+              name:
+                '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789',
+            },
+          },
+        ]),
+        FileFormat.YAML
+      );
+
+      expect(result).toEqual(
+        `apiVersion: v1
+kind: ResourceList
+metadata:
+  name: output
+items:
+- apiVersion: v1
+  kind: Namespace
+  metadata:
+    name: 0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789
+`
+      );
+    });
   });
 
   describe('in JSON format', () => {