fix: Ignore unchanged files when calculating delta

Author: rschristian

src/utils.js

@@ -198,11 +198,12 @@ export function diffTable(files, { showTotal, collapseUnchanged, omitUnchanged,
 	for (const file of files) {
 		const { filename, size, delta } = file;
 		totalSize += size;
-		totalDelta += delta;
 
 		const originalSize = size - delta;
 		const isUnchanged = Math.abs(delta) < minimumChangeThreshold;
 
+		if (!isUnchanged) totalDelta += delta;
+
 		if (isUnchanged && omitUnchanged) continue;
 
 		const row = [

tests/__snapshots__/utils.spec.js.snap

@@ -85,7 +85,7 @@ exports[`diffTable 4`] = `
 `;
 
 exports[`diffTable 5`] = `
-"**Size Change:** +9 B (+0.04%) 
+"**Size Change:** 0 B 
 
 **Total Size:** 21.3 kB