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export default function getGlobals ( imports, { globals, onerror, onwarn } ) {
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const globalFn = getGlobalFn( globals );
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return imports.map( x => {
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let name = globalFn( x.source.value );
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if ( !name ) {
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if ( x.name.startsWith( '__import' ) ) {
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const error = new Error( `Could not determine name for imported module '${x.source.value}' – use options.globals` );
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if ( onerror ) {
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onerror( error );
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} else {
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throw error;
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}
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}
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else {
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const warning = {
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message: `No name was supplied for imported module '${x.source.value}'. Guessing '${x.name}', but you should use options.globals`
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};
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if ( onwarn ) {
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onwarn( warning );
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} else {
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console.warn( warning ); // eslint-disable-line no-console
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}
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}
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name = x.name;
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}
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return name;
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});
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}
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function getGlobalFn ( globals ) {
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if ( typeof globals === 'function' ) return globals;
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if ( typeof globals === 'object' ) {
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return id => globals[ id ];
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}
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return () => undefined;
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}
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