dataToEsm compact option

Author: guybedford

src/dataToEsm.js

@@ -2,29 +2,32 @@ import makeLegalIdentifier from './makeLegalIdentifier';
 import tosource from 'tosource';
 
 // convert data object into separate named exports (and default)
-export default function dataToNamedExports ( obj ) {
+export default function dataToNamedExports ( obj, compact ) {
+  const _ = compact ? '' : ' ';
+  const nl = compact ? '' : '\n';
   let output = '';
-  let defaultExports = '\n';
+  let defaultExports = compact ? '' : nl;
   const usedLegalKeys = Object.create( null );
   let index = 0;
   const keys = Object.keys( obj );
   for ( let i = 0; i < keys.length; i++ ) {
     const key = keys[i];
     const legalKey = makeLegalIdentifier( key );
-    output += `export const ${ legalKey } = ${tosource( obj[key] )};\n`;
+    let serialized = tosource( obj[key], null, compact ? false : '  ' );
+    output += `export const ${ legalKey }${ _ }=${ _ }${ serialized };${ nl }`;
     while ( usedLegalKeys[legalKey + (index || '')] )
       index++;
     index = 0;
     usedLegalKeys[legalKey + ( index || '' )] = true;
     if ( defaultExports.length > 1 )
-      defaultExports += ',\n';
+      defaultExports += `,${ nl }`;
     if ( key === legalKey )
-      defaultExports += `  ${ key }`;
+      defaultExports += `${ _ }${ _ }${ key }`;
     else
-      defaultExports += `  ${ `'${ key }'` }: ${ legalKey }`;
+      defaultExports += `${ _ }${ _ }${ `'${ key }'` }:${ _ }${ legalKey }`;
   }
   if ( defaultExports.length > 3 )
-    defaultExports += '\n';
-  output += `export default {${ defaultExports }};`;
+    defaultExports += nl;
+  output += `export default${_}{${ defaultExports }};`;
   return output;
 };

test/test.js

@@ -447,16 +447,21 @@ describe( 'rollup-pluginutils', function () {
 		var dataToEsm = utils.dataToEsm;
 
 		it( 'outputs treeshakable data', function () {
-			assert.equal( dataToEsm({ some: 'data', another: 'data' }), 'export const some = "data";\nexport const another = "data";\nexport default {\n  some,\n  another\n};' );
+			assert.equal( dataToEsm( { some: 'data', another: 'data' } ), 'export const some = "data";\nexport const another = "data";\nexport default {\n  some,\n  another\n};' );
 		});
 
 		it( 'handles illegal identifiers', function () {
-			assert.equal( dataToEsm({ '1': 'data', 'default': 'data' }), 'export const _1 = "data";\nexport const _default = "data";\nexport default {\n  \'1\': _1,\n  \'default\': _default\n};' );
+			assert.equal( dataToEsm( { '1': 'data', 'default': 'data' } ), 'export const _1 = "data";\nexport const _default = "data";\nexport default {\n  \'1\': _1,\n  \'default\': _default\n};' );
 		});
 
 		it( 'supports non-JSON data', function () {
 			const date = new Date();
-			assert.equal( dataToEsm({ inf: Infinity, date: date }), 'export const inf = Infinity;\nexport const date = new Date(' + date.getTime() + ');\nexport default {\n  inf,\n  date\n};' );
+			assert.equal( dataToEsm( { inf: Infinity, date: date } ), 'export const inf = Infinity;\nexport const date = new Date(' + date.getTime() + ');\nexport default {\n  inf,\n  date\n};' );
+		});
+
+		it( 'supports a compact argument', function () {
+			assert.equal( dataToEsm( { some: 'data', another: 'data' }, true ), 'export const some="data";export const another="data";export default{some,another};' );
+			assert.equal( dataToEsm( { some: { deep: { object: 'definition', here: 'here' } }, another: 'data' }, true ), 'export const some={deep:{object:"definition",here:"here"}};export const another="data";export default{some,another};' );
 		});
 	});
 });