fix: ES5 compatibility

MikeyParton · web-flow · commit 43e081f3a276 · 2021-04-07T15:15:50.000+03:00
diff --git a/src/index.js b/src/index.js
@@ -1017,7 +1017,7 @@ class MiniCssExtractPlugin {
                           [
                             `var href = ${RuntimeGlobals.require}.miniCssF(chunkId);`,
                             `var fullhref = ${RuntimeGlobals.publicPath} + href;`,
-                            'const oldTag = findStylesheet(href, fullhref);',
+                            'var oldTag = findStylesheet(href, fullhref);',
                             'if(!oldTag) return;',
                             `promises.push(new Promise(${runtimeTemplate.basicFunction(
                               'resolve, reject',
diff --git a/test/cases/hmr/expected/webpack-5/main.js b/test/cases/hmr/expected/webpack-5/main.js
@@ -914,7 +914,7 @@ module.exports = function (urlString) {
 /******/ 			chunkIds.forEach((chunkId) => {
 /******/ 				var href = __webpack_require__.miniCssF(chunkId);
 /******/ 				var fullhref = __webpack_require__.p + href;
-/******/ 				const oldTag = findStylesheet(href, fullhref);
+/******/ 				var oldTag = findStylesheet(href, fullhref);
 /******/ 				if(!oldTag) return;
 /******/ 				promises.push(new Promise((resolve, reject) => {
 /******/ 					var tag = createStylesheet(chunkId, fullhref, () => {

Original file line number	Diff line number	Diff line change
`@@ -1017,7 +1017,7 @@ class MiniCssExtractPlugin {`
`1017`	`1017`	`[`
`1018`	`1018`	`var href = ${RuntimeGlobals.require}.miniCssF(chunkId);`,
`1019`	`1019`	`var fullhref = ${RuntimeGlobals.publicPath} + href;`,
`1020`		`- 'const oldTag = findStylesheet(href, fullhref);',`
	`1020`	`+ 'var oldTag = findStylesheet(href, fullhref);',`
`1021`	`1021`	`'if(!oldTag) return;',`
`1022`	`1022`	`promises.push(new Promise(${runtimeTemplate.basicFunction(
`1023`	`1023`	`'resolve, reject',`