Make sure the loose parser skips number literals with invalid separators

marijnh · marijnh · commit b27ce7405b18 · 2025-05-20T14:11:11.000+02:00
FIX: Handle tokenizer exceptions raised by invalid numeric separators. Closes #1363
diff --git a/acorn-loose/src/tokenize.js b/acorn-loose/src/tokenize.js
@@ -58,7 +58,7 @@ lp.readToken = function() {
         } else {
           replace = false
         }
-      } else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(msg)) {
+      } else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix|numeric separator/i.test(msg)) {
         while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) ++pos
       } else if (/character escape|expected hexadecimal/i.test(msg)) {
         while (pos < this.input.length) {

Original file line number	Diff line number	Diff line change
`@@ -58,7 +58,7 @@ lp.readToken = function() {`
`58`	`58`	`} else {`
`59`	`59`	`replace = false`
`60`	`60`	`}`
`61`		`- } else if (/invalid (unicode\|regexp\|number)\|expecting unicode\|octal literal\|is reserved\|directly after number\|expected number in radix/i.test(msg)) {`
	`61`	`+ } else if (/invalid (unicode\|regexp\|number)\|expecting unicode\|octal literal\|is reserved\|directly after number\|expected number in radix\|numeric separator/i.test(msg)) {`
`62`	`62`	`while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) ++pos`
`63`	`63`	`} else if (/character escape\|expected hexadecimal/i.test(msg)) {`
`64`	`64`	`while (pos < this.input.length) {`