Move regex test into compile

src/compile/Component.ts

@@ -556,6 +556,13 @@ export default class Component {
 
 		const frame = getCodeFrame(this.source, start.line - 1, start.column);
 
+		if (start && warning.code && frame) {
+			const regex = new RegExp(`(?:${start.line - 1}:\\s*<!--\\s*svelte-disable-next-line|${start.line}:[^\\n]+<!--\\s*svelte-disable-line)\\s+${warning.code}.*?-->`);
+			if (regex.test(frame)) {
+				return;
+			}
+		}
+
 		this.stats.warn({
 			code: warning.code,
 			message: warning.message,

src/compile/index.ts

@@ -11,24 +11,13 @@ function normalize_options(options: CompileOptions): CompileOptions {
 	let normalized = assign({ generate: 'dom', dev: false }, options);
 	const { onwarn } = normalized;
 
-	normalized.onwarn = (warning: Warning) => {
+	normalized.onwarn = onwarn
-		if (!should_ignore(warning)) {
+		? (warning: Warning) => onwarn(warning, default_onwarn)
-			onwarn ? onwarn(warning, default_onwarn) : default_onwarn(warning);
+		: default_onwarn;
-		}
-	}
 
 	return normalized;
 }
 
-function should_ignore({ start, code, frame }: Warning) {
-	if (!(start && code && frame)) {
-		return false;
-	}
-
-	const regex = new RegExp(`(?:${start.line - 1}:\\s*<!--\\s*svelte-disable-next-line|${start.line}:[^\\n]+<!--\\s*svelte-disable-line)\\s+${code}.*?-->`);
-	return regex.test(frame);
-}
-
 function default_onwarn({ start, message }: Warning) {
 	if (start) {
 		console.warn(`(${start.line}:${start.column}) – ${message}`);