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67 lines
1.9 KiB
67 lines
1.9 KiB
var buble = require( 'buble' );
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var fs = require( 'fs' );
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var assert = require( 'assert' );
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var getLocation = require( '../../utils/getLocation' );
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var SourceMapConsumer = require( 'source-map' ).SourceMapConsumer;
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module.exports = {
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description: 'preserves sourcemap chains when transforming',
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options: {
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plugins: [
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{
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load: function ( id ) {
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if ( /foo.js$/.test( id ) ) {
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id = id.replace( /foo.js$/, 'bar.js' );
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} else if ( /bar.js$/.test( id ) ) {
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id = id.replace( /bar.js$/, 'foo.js' );
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}
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var code = fs.readFileSync( id, 'utf-8' );
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var out = buble.transform( code, {
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transforms: { modules: false },
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sourceMap: true,
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source: id
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});
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if ( /main.js$/.test( id ) ) {
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delete out.map.sources;
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} else {
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const slash = out.map.sources[0].lastIndexOf( '/' ) + 1;
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out.map.sources = out.map.sources.map( source => '../' + source.slice( slash ) );
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out.map.sourceRoot = 'fake';
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}
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return { code: out.code, map: out.map };
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}
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}
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]
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},
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test: function ( code, map ) {
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var smc = new SourceMapConsumer( map );
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var generatedLoc;
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var originalLoc;
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generatedLoc = getLocation( code, code.indexOf( '22' ) );
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originalLoc = smc.originalPositionFor( generatedLoc );
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assert.equal( originalLoc.source, '../foo.js' );
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assert.equal( originalLoc.line, 1 );
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assert.equal( originalLoc.column, 32 );
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generatedLoc = getLocation( code, code.indexOf( '20' ) );
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originalLoc = smc.originalPositionFor( generatedLoc );
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assert.equal( originalLoc.source, '../bar.js' );
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assert.equal( originalLoc.line, 1 );
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assert.equal( originalLoc.column, 37 );
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generatedLoc = getLocation( code, code.indexOf( 'log' ) );
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originalLoc = smc.originalPositionFor( generatedLoc );
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assert.equal( originalLoc.source, '../main.js' );
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assert.ok( /columns/.test( smc.sourceContentFor( '../main.js' ) ) );
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assert.equal( originalLoc.line, 4 );
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assert.equal( originalLoc.column, 19 );
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}
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};
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