diff --git a/generate-type-definitions.js b/generate-type-definitions.js
index d8f6e9f826..6ec2f313c3 100644
--- a/generate-type-definitions.js
+++ b/generate-type-definitions.js
@@ -3,8 +3,12 @@
 const { execSync } = require('child_process');
 const { readFileSync, writeFileSync } = require('fs');
 
-execSync('tsc -p src/compiler --emitDeclarationOnly && tsc -p src/runtime --emitDeclarationOnly');
-
+try {
+	execSync('tsc -p src/compiler --emitDeclarationOnly && tsc -p src/runtime --emitDeclarationOnly');
+} catch (err) {
+	console.error(err.stderr.toString());
+	throw err;
+}
 // We need to add these types to the .d.ts files here because if we add them before building, the build will fail,
 // because the TS->JS transformation doesn't know these exports are types and produces code that fails at runtime.
 // We can't use `export type` syntax either because the TS version we're on doesn't have this feature yet.
diff --git a/src/runtime/transition/index.ts b/src/runtime/transition/index.ts
index 5940d054d3..c6d9dbc97a 100644
--- a/src/runtime/transition/index.ts
+++ b/src/runtime/transition/index.ts
@@ -198,7 +198,7 @@ export function draw(node: SVGElement & { getTotalLength(): number }, {
 		delay,
 		duration,
 		easing,
-		css: (t, u) => `
+		css: (_, u) => `
 			stroke-dasharray: ${len};
 			stroke-dashoffset: ${u * len};
 		`