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site/content/docs/04-run-time.md

@@ -670,7 +670,7 @@ Animates a `blur` filter alongside an element's opacity.
 * `duration` (`number`, default 400) — milliseconds the transition lasts
 * `easing` (`function`, default `cubicInOut`) — an [easing function](/docs#run-time-svelte-easing)
 * `opacity` (`number`, default 0) - the opacity value to animate out to and in from
-* `amount` (`number|string`, default 5) - the size of the blur (support css units, for example: "4rem", numbers use px)
+* `amount` (`number | string`, default 5) - the size of the blur. Supports css units (for example: `"4rem"`). The default unit is `px`
 
 ```sv
 <script>

src/runtime/internal/utils.ts

@@ -190,14 +190,13 @@ export function action_destroyer(action_result) {
 	return action_result && is_function(action_result.destroy) ? action_result.destroy : noop;
 }
 
-export function split_css_unit(value: number | string, fallback = 'px'): [number, string] {
+export function split_css_unit(value: number | string): [number, string] {
 	if (typeof value === 'number') {
-		return [value, fallback];
+		return [value, 'px'];
 	}
 	const split = value?.match?.(/^\s*(-?[\d.]+)([^\s]*)\s*$/);
 	if (split) {
-		return [parseFloat(split[1]), split[2] || fallback];
+		return [parseFloat(split[1]), split[2] || 'px'];
 	}
-	console.warn('Failed to split', value);
-	return [parseFloat(value), fallback];
+	return [parseFloat(value), 'px'];
 }

test/utils/index.ts

@@ -21,34 +21,10 @@ describe('utils', () => {
 			assert.deepEqual(split_css_unit('10'), [10, 'px']);
 		});
 
-		it('should use the fallback', () => {
-			assert.deepEqual(split_css_unit(100, '%'), [100, '%']);
-			assert.deepEqual(split_css_unit('100', '%'), [100, '%']);
-		});
-
 		it('should split the css notation into value and unit', () => {
 			assert.deepEqual(split_css_unit('-50%'), [-50, '%']);
 			assert.deepEqual(split_css_unit('0.1rem'), [0.1, 'rem']);
 			assert.deepEqual(split_css_unit('.1rem'), [0.1, 'rem']);
 		});
-
-		it('should complain for invalid input', () => {
-			const warnings = [];
-			const warn = console.warn;
-			console.warn = (...args) => {
-				warnings.push(args);
-			};
-
-			split_css_unit('calc(100vw - 10rem)');
-			split_css_unit(undefined);
-			assert.deepEqual(split_css_unit('100 %'), [100, 'px']);
-			assert.deepEqual(warnings, [
-				['Failed to split', 'calc(100vw - 10rem)'],
-				['Failed to split', undefined],
-				['Failed to split', '100 %']
-			]);
-
-			console.warn = warn;
-		});
 	});
 });