Improve error message for missing variant

davewasmer · web-flow · commit 93cddddaa0ba · 2020-05-04T22:26:55.000-06:00
diff --git a/src/lib/substituteVariantsAtRules.js b/src/lib/substituteVariantsAtRules.js
@@ -78,6 +78,9 @@ export default function(config, { variantGenerators: pluginVariantGenerators })
       }
 
       _.forEach(_.without(ensureIncludesDefault(variants), 'responsive'), variant => {
+        if (!variantGenerators[variant]) {
+          throw new Error(`Your config mentions the "${variant}" variant, but "${variant}" doesn't appear to be a variant. Did you forget or misconfigure a plugin that supplies that variant?`);
+        }
         variantGenerators[variant](atRule, config)
       })
 

Original file line number	Diff line number	Diff line change
`@@ -78,6 +78,9 @@ export default function(config, { variantGenerators: pluginVariantGenerators })`
`78`	`78`	`}`
`79`	`79`
`80`	`80`	`_.forEach(_.without(ensureIncludesDefault(variants), 'responsive'), variant => {`
	`81`	`+ if (!variantGenerators[variant]) {`
	`82`	+ throw new Error(`Your config mentions the "${variant}" variant, but "${variant}" doesn't appear to be a variant. Did you forget or misconfigure a plugin that supplies that variant?`);
	`83`	`+ }`
`81`	`84`	`variantGenerators[variant](atRule, config)`
`82`	`85`	`})`
`83`	`86`