Added show-no-change option

README.md

@@ -162,6 +162,7 @@ Please check the above setup example to use this action with `pull_request_targe
 | `include_extensions`      | `.js,.cjs,.mjs`                       | A comma-separated list of file extension to be included in the analysis table.                                   |
 | `percent_extra_attention` | `20`                                  | If an out file size has increased more than this percent, display a "‼️" to draw extra attention to the change.  |
 | `show_details`            | `true`                                | If `true`, a collapsed "details" section is rendered. It explains the details of the numbers provided and icons. |
+| `show_no_change`          | `false`                               | If `true`, all bundles are shown in the analysis regardless of size change. If `false`, only bundles with size changes are shown. |
 | `top_n_largest_paths`     | `20`                                  | The number of largest paths (e.g.) `node_modules/foo`) to be collected. If 0 or lower, skipped.                  |
 
 ## Action outputs

__tests__/no-base.test.ts

@@ -21,6 +21,8 @@ describe("examples w/o base analysis", () => {
 				metafiles: ["out/**/meta.json"],
 				name: "test",
 				showDetails: false,
+				showNoChange: true,
+				topNLargestPaths: 10,
 			};
 
 			beforeEach(() => {

__tests__/with-base.test.ts

@@ -16,20 +16,25 @@ describe("examples w/ base analysis", () => {
 		"examples-with-base",
 	);
 
-	for (const example of getExampleDirectories(fixturesPath)) {
+	for (const [index, example] of getExampleDirectories(
+		fixturesPath,
+	).entries()) {
 		describe(`example ${example.name}`, () => {
 			const metafiles =
 				example.name === "multi-metafiles"
 					? ["out/meta1.json", "out/meta2.json"]
 					: ["out/meta.json"];
 
+			const isEven = index % 2 === 0;
 			const input: Input = {
 				analyzerDirectory: ".analyzer",
 				percentExtraAttention: 20,
 				includeExtensions: [".js", ".mjs", ".cjs"],
 				metafiles,
 				name: "test",
 				showDetails: false,
+				showNoChange: isEven,
+				topNLargestPaths: 10,
 			};
 
 			beforeEach(() => {
@@ -53,6 +58,11 @@ describe("examples w/ base analysis", () => {
 				expect(comment).toMatch(/⚠️ \+\d+/);
 				expect(comment).toMatch(/✅ {2}-\d+/);
 				expect(comment).toMatch(/✅ {2}No change/i);
+				if (isEven) {
+					expect(comment).not.toMatch(/\d bundles with no change are hidden./i);
+				} else {
+					expect(comment).toMatch(/\d bundles with no change are hidden./i);
+				}
 				expect(comment).toMatch(/🆕 Added/i);
 				expect(comment).toMatch(/🗑️ Deleted/i);
 			});

action.yaml

@@ -54,6 +54,11 @@ inputs:
     default: "true"
     description: |
       If `true`, a collapsed "details" section is rendered. It explains the details of the numbers provided and icons.
+  show_no_change_bundles:
+    required: false
+    default: "true"
+    description: |
+      If `true`, all bundles are shown in the analysis regardless of size change. If `false`, only bundles with size changes are shown.
   top_n_largest_paths:
     required: false
     default: "20"
@@ -83,6 +88,7 @@ runs:
         INPUT_INCLUDE_EXTENSIONS: ${{ inputs.include_extensions }}
         INPUT_PERCENT_EXTRA_ATTENTION: ${{ inputs.percent_extra_attention }}
         INPUT_SHOW_DETAILS: ${{ inputs.show_details }}
+        INPUT_SHOW_NO_CHANGE: ${{ inputs.show_no_change }}
         INPUT_TOP_N_LARGEST_PATHS: ${{ inputs.top_n_largest_paths }}
       run: |
         node ${{ github.action_path }}/dist/index.mjs

src/compare.ts

@@ -69,7 +69,12 @@ This analysis was generated by [esbuild-bundle-analyzer](https://github.com/exoe
 	console.log("Comparison done.", comparison);
 
 	if (hasAnyChange) {
-		output += markdownTable(comparison, input.percentExtraAttention);
+		output += markdownTable(
+			comparison,
+			input.percentExtraAttention,
+			input.showNoChange,
+		);
+		output += noChangesTable(comparison, input.showNoChange);
 		output += fileSizeTable(comparison, input.topNLargestPaths);
 		output += detail(input);
 	} else {
@@ -215,11 +220,16 @@ function filesize(bytes: number): string {
 	throw new Error("Too large file size!! Are you sure?");
 }
 
+const shouldShowBundle = (d: CompareResult, showNoChange: boolean) =>
+	showNoChange || d.bytes - d.baseBytes !== 0;
+
 function markdownTable(
 	data: Array<CompareResult>,
 	redThreshold: number,
+	showNoChange: boolean,
 ): string {
 	const rows = data
+		.filter((d) => shouldShowBundle(d, showNoChange))
 		.map((d) => {
 			return `${d.metafile} | ${d.outfile} | ${renderSize(d)} | ${renderNote(
 				d,
@@ -234,6 +244,33 @@ Meta File | Out File  | Size (raw) | Note
 ${rows}`;
 }
 
+function noChangesTable(
+	data: Array<CompareResult>,
+	showNoChange: boolean,
+): string {
+	const noChangeBundles = data.filter(
+		(d) => !shouldShowBundle(d, showNoChange),
+	);
+	const rows = noChangeBundles
+		.map((d) => {
+			return `${d.metafile} | ${d.outfile} | ${renderSize(d)} | ✅  No change\n`;
+		})
+		.join("");
+	if (noChangeBundles.length === 0) {
+		return "";
+	}
+	return `
+<details>
+<summary>${noChangeBundles.length} bundles with no change are hidden.</summary>    
+
+Meta File | Out File  | Size (raw) | Note 
+----------|----------|-----------:|------
+${rows}
+
+</details>
+`;
+}
+
 /**
  * Find the top N largest nodes in root tree.
  * Dig nodes until the depth of 3.

src/index.ts

@@ -21,6 +21,9 @@ function getInput(): Input {
 		showDetails: ["true", "True", "TRUE"].includes(
 			getSingleInput("show_details") || "true",
 		),
+		showNoChange: ["true", "True", "TRUE"].includes(
+			getSingleInput("show_no_change") || "true",
+		),
 		topNLargestPaths: Number.parseInt(
 			getSingleInput("top_n_largest_paths") || "20",
 			10,

src/types.ts

@@ -22,6 +22,7 @@ export interface Input {
 	analyzerDirectory: string;
 	percentExtraAttention: number;
 	showDetails: boolean;
+	showNoChange: boolean;
 }
 
 export interface TreeMapNode {