Update utils.js (#3656)

langren1353 · web-flow · commit f61318851b20 · 2021-11-11T19:35:31.000+08:00
fix when script run with TamperMonkey or GreaseMonkey tag is null
diff --git a/packages/less/src/less-browser/utils.js b/packages/less/src/less-browser/utils.js
@@ -9,6 +9,7 @@ export function extractId(href) {
 }
 
 export function addDataAttr(options, tag) {
+	if(!tag) return; // in case of tag is null or undefined
     for (const opt in tag.dataset) {
         if (tag.dataset.hasOwnProperty(opt)) {
             if (opt === 'env' || opt === 'dumpLineNumbers' || opt === 'rootpath' || opt === 'errorReporting') {

Original file line number	Diff line number	Diff line change
`@@ -9,6 +9,7 @@ export function extractId(href) {`
`9`	`9`	`}`
`10`	`10`
`11`	`11`	`export function addDataAttr(options, tag) {`
	`12`	`+ if(!tag) return; // in case of tag is null or undefined`
`12`	`13`	`for (const opt in tag.dataset) {`
`13`	`14`	`if (tag.dataset.hasOwnProperty(opt)) {`
`14`	`15`	`if (opt === 'env' \|\| opt === 'dumpLineNumbers' \|\| opt === 'rootpath' \|\| opt === 'errorReporting') {`