Fix parsing usage example (value may not be set)

tidoust · tidoust · commit 77ed0e05f650 · 2025-06-10T11:06:16.000+02:00
diff --git a/packages/css/README.md b/packages/css/README.md
@@ -30,6 +30,9 @@ const { definitionSyntax } = require('css-tree');
 
 const { properties } = await css.listAll();
 for (const property of properties) {
+  if (!property.value) {
+    continue;
+  }
   const ast = definitionSyntax.parse(property.value);
   // do something with the abstract syntax tree
 }

Original file line number	Diff line number	Diff line change
`@@ -30,6 +30,9 @@ const { definitionSyntax } = require('css-tree');`
`30`	`30`
`31`	`31`	`const { properties } = await css.listAll();`
`32`	`32`	`for (const property of properties) {`
	`33`	`+ if (!property.value) {`
	`34`	`+ continue;`
	`35`	`+ }`
`33`	`36`	`const ast = definitionSyntax.parse(property.value);`
`34`	`37`	`// do something with the abstract syntax tree`
`35`	`38`	`}`