fix(sourcemap): accept a sourceMappingURL that ends with a newline (microsoft#45983)

JoelEinbinder · weswigham · web-flow · commit 46a12fdb8ac3 · 2021-10-01T05:16:05.000-07:00
* fix(sourcemap): accept a sourceMappingURL that ends with a newline

* Update src/compiler/sourcemap.ts

Co-authored-by: Wesley Wigham &lt;wwigham@gmail.com&gt;
diff --git a/src/compiler/sourcemap.ts b/src/compiler/sourcemap.ts
@@ -322,7 +322,8 @@ namespace ts {
     }
 
     // Sometimes tools can see the following line as a source mapping url comment, so we mangle it a bit (the [M])
-    const sourceMapCommentRegExp = /^\/\/[@#] source[M]appingURL=(.+)$/;
+    const sourceMapCommentRegExp = /^\/\/[@#] source[M]appingURL=(.+)\r?\n?$/;
+
     const whitespaceOrMapCommentRegExp = /^\s*(\/\/[@#] .*)?$/;
 
     export interface LineInfo {

Original file line number	Diff line number	Diff line change
`@@ -322,7 +322,8 @@ namespace ts {`
`322`	`322`	`}`
`323`	`323`
`324`	`324`	`// Sometimes tools can see the following line as a source mapping url comment, so we mangle it a bit (the [M])`
`325`		`- const sourceMapCommentRegExp = /^\/\/[@#] source[M]appingURL=(.+)$/;`
	`325`	`+ const sourceMapCommentRegExp = /^\/\/[@#] source[M]appingURL=(.+)\r?\n?$/;`
	`326`	`+`
`326`	`327`	`const whitespaceOrMapCommentRegExp = /^\s(\/\/[@#] .)?$/;`
`327`	`328`
`328`	`329`	`export interface LineInfo {`