test(gutenberg-to-portable-text): add transform tests (#332)

* test(gutenberg-to-portable-text): add transform tests

This adds a bunch of tests, mostly for the transformers but also some
minor edge cases in the inline parser, too.

It also enables `noUnusedLocals` in `tsconfig.json` which caught a
couple of unused things.

* chore: add domain to each

* style: format

* chore: remove some figures

---------

Co-authored-by: emdashbot[bot] <emdashbot[bot]@users.noreply.github.com>

packages/gutenberg-to-portable-text/src/index.ts

@@ -9,7 +9,7 @@
 import { parse } from "@wordpress/block-serialization-default-parser";
 
 import { parseInlineContent } from "./inline.js";
-import { getTransformer, defaultTransformers, fallbackTransformer } from "./transformers/index.js";
+import { getTransformer } from "./transformers/index.js";
 import type {
 	GutenbergBlock,
 	PortableTextBlock,

packages/gutenberg-to-portable-text/src/transformers/core.ts

@@ -550,8 +550,6 @@ export const group: BlockTransformer = (block, _options, context) => {
  * core/table → table block
  */
 export const table: BlockTransformer = (block, _options, context) => {
-	const _hasFixedLayout = attrBoolean(block.attrs, "hasFixedLayout");
-
 	// Parse the table HTML
 	const tableMatch = block.innerHTML.match(TABLE_TAG_PATTERN);
 	if (!tableMatch) {