How to use @wordpress/block-serialization-default-parser - 1 common examples

it( basename, () => {
			const {
				filename: htmlFixtureFileName,
				file: htmlFixtureContent,
			} = getBlockFixtureHTML( basename );
			if ( htmlFixtureContent === null ) {
				throw new Error(
					`Missing fixture file: ${ htmlFixtureFileName }`
				);
			}

			const {
				filename: parsedJSONFixtureFileName,
				file: parsedJSONFixtureContent,
			} = getBlockFixtureParsedJSON( basename );
			const parserOutputActual = grammarParse( htmlFixtureContent );
			let parserOutputExpectedString;
			if ( parsedJSONFixtureContent ) {
				parserOutputExpectedString = parsedJSONFixtureContent;
			} else if ( process.env.GENERATE_MISSING_FIXTURES ) {
				parserOutputExpectedString = JSON.stringify(
					parserOutputActual,
					null,
					4
				) + '\n';
				writeBlockFixtureParsedJSON( basename, parserOutputExpectedString );
			} else {
				throw new Error(
					`Missing fixture file: ${ parsedJSONFixtureFileName }`
				);
			}