Add support for alternate octal integer syntax

src/javascript/javascript.test.ts

@@ -346,6 +346,20 @@ testTokenization('javascript', [
 		]
 	}],
 
+	[{
+		line: '0o123',
+		tokens: [
+			{ startIndex: 0, type: 'number.octal.js' }
+		]
+	}],
+
+	[{
+		line: '0O123',
+		tokens: [
+			{ startIndex: 0, type: 'number.octal.js' }
+		]
+	}],
+
 	[{
 		line: '0x',
 		tokens: [

src/typescript/typescript.test.ts

@@ -346,6 +346,20 @@ testTokenization('typescript', [
 		]
 	}],
 
+	[{
+		line: '0o123',
+		tokens: [
+			{ startIndex: 0, type: 'number.octal.ts' }
+		]
+	}],
+
+	[{
+		line: '0O123',
+		tokens: [
+			{ startIndex: 0, type: 'number.octal.ts' }
+		]
+	}],
+
 	[{
 		line: '0x',
 		tokens: [

src/typescript/typescript.ts

@@ -146,7 +146,7 @@ export const language = {
 			[/(@digits)[eE]([\-+]?(@digits))?/, 'number.float'],
 			[/(@digits)\.(@digits)([eE][\-+]?(@digits))?/, 'number.float'],
 			[/0[xX](@hexdigits)/, 'number.hex'],
-			[/0(@octaldigits)/, 'number.octal'],
+			[/0[oO]?(@octaldigits)/, 'number.octal'],
 			[/0[bB](@binarydigits)/, 'number.binary'],
 			[/(@digits)/, 'number'],