nodeca
diff --git a/‎src/ast/presenter.ts‎
Lines changed: 8 additions & 1 deletion b/‎src/ast/presenter.ts‎
Lines changed: 8 additions & 1 deletion
diff --git a/‎test/core/units/dump-options.test.mjs‎
Lines changed: 5 additions & 1 deletion b/‎test/core/units/dump-options.test.mjs‎
Lines changed: 5 additions & 1 deletion
@@ -67,7 +67,10 @@ interface PresenterOptions {
   flowSkipCommaSpace?: boolean
 
   /**
-   * Omits the space after `:` in flow mappings: `{a: 1}` becomes `{a:1}`.
+   * Omits the space after `:` in flow mappings: `{"a": 1}` becomes `{"a":1}`.
+   *
+   * This forces `quoteFlowKeys`; otherwise `a:1` would be parsed as a single
+   * plain scalar instead of a mapping entry.
    *
    * @defaultValue `false`
    */
@@ -132,6 +135,10 @@ function createPresenterState (options: PresenterOptions): PresenterState {
     ...options
   }
 
+  if (opts.flowSkipColonSpace) {
+    opts.quoteFlowKeys = true
+  }
+
   return {
     ...opts,
     defaultScalarTagName: opts.schema.defaultScalarTag.tagName,
 
@@ -151,7 +151,11 @@ describe('dump options', () => {
 
   it('flowSkipColonSpace — drops the space after flow colons', () => {
     assert.equal(dump({ a: 1 }, { flowLevel: 0 }), '{a: 1}\n')
-    assert.equal(dump({ a: 1 }, { flowLevel: 0, flowSkipColonSpace: true }), '{a:1}\n')
+
+    const output = dump({ a: 1 }, { flowLevel: 0, flowSkipColonSpace: true })
+
+    assert.equal(output, '{"a":1}\n')
+    assert.deepEqual(load(output), { a: 1 })
   })
 
   it('quoteFlowKeys — quotes keys in flow mappings', () => {