1 | import { keys } from '../utils/object.js';
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2 |
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3 | function notDefault ( name ) {
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4 | return name !== 'default';
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5 | }
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6 |
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7 | export default function es6 ( bundle, magicString ) {
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8 | const importBlock = bundle.externalModules
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9 | .map( module => {
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10 | const specifiers = [];
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11 | const specifiersList = [specifiers];
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12 | const importedNames = keys( module.declarations )
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13 | .filter( name => name !== '*' && name !== 'default' );
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14 |
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15 | if ( module.declarations.default ) {
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16 | specifiers.push( module.name );
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17 | }
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18 |
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19 | const namespaceSpecifier = module.declarations['*'] ? `* as ${module.name}` : null;
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20 | const namedSpecifier = importedNames.length ? `{ ${importedNames.join( ', ' )} }` : null;
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21 |
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22 | if ( namespaceSpecifier && namedSpecifier ) {
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23 |
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24 | specifiersList.push( [namespaceSpecifier] );
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25 | specifiers.push( namedSpecifier );
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26 | } else if ( namedSpecifier ) {
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27 | specifiers.push( namedSpecifier );
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28 | } else if ( namespaceSpecifier ) {
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29 | specifiers.push( namespaceSpecifier );
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30 | }
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31 |
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32 | return specifiersList
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33 | .map( specifiers =>
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34 | specifiers.length ?
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35 | `import ${specifiers.join( ', ' )} from '${module.id}';` :
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36 | `import '${module.id}';`
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37 | )
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38 | .join( '\n' );
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39 | })
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40 | .join( '\n' );
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41 |
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42 | if ( importBlock ) {
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43 | magicString.prepend( importBlock + '\n\n' );
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44 | }
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45 |
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46 | const module = bundle.entryModule;
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47 |
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48 | const specifiers = module.getExports().filter( notDefault ).map( name => {
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49 | const declaration = module.traceExport( name );
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50 |
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51 | return declaration.name === name ?
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52 | name :
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53 | `${declaration.name} as ${name}`;
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54 | });
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55 |
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56 | let exportBlock = specifiers.length ? `export { ${specifiers.join(', ')} };` : '';
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57 |
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58 | const defaultExport = module.exports.default || module.reexports.default;
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59 | if ( defaultExport ) {
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60 | exportBlock += `export default ${module.traceExport( 'default' ).render( true )};`;
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61 | }
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62 |
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63 | if ( exportBlock ) {
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64 | magicString.append( '\n\n' + exportBlock.trim() );
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65 | }
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66 |
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67 | return magicString.trim();
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68 | }
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