fix: check if 'btoa' exists for old IE versions (#479)

okchangwon · web-flow · commit 732ef8bcb60a · 2020-08-17T15:41:17.000+03:00
diff --git a/src/runtime/injectStylesIntoStyleTag.js b/src/runtime/injectStylesIntoStyleTag.js
@@ -187,7 +187,7 @@ function applyToTag(style, options, obj) {
     style.removeAttribute('media');
   }
 
-  if (sourceMap && btoa) {
+  if (sourceMap && typeof btoa !== 'undefined') {
     css += `\n/*# sourceMappingURL=data:application/json;base64,${btoa(
       unescape(encodeURIComponent(JSON.stringify(sourceMap)))
     )} */`;

Original file line number	Diff line number	Diff line change
`@@ -187,7 +187,7 @@ function applyToTag(style, options, obj) {`
`187`	`187`	`style.removeAttribute('media');`
`188`	`188`	`}`
`189`	`189`
`190`		`- if (sourceMap && btoa) {`
	`190`	`+ if (sourceMap && typeof btoa !== 'undefined') {`
`191`	`191`	css += `\n/*# sourceMappingURL=data:application/json;base64,${btoa(
`192`	`192`	`unescape(encodeURIComponent(JSON.stringify(sourceMap)))`
`193`	`193`	)} */`;