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19 lines
628 B
JavaScript
19 lines
628 B
JavaScript
10 months ago
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import {ContextualKeyword} from "../parser/tokenizer/keywords";
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import {TokenType as tt} from "../parser/tokenizer/types";
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/**
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* Starting at `export {`, look ahead and return `true` if this is an
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* `export {...} from` statement and `false` if this is a plain multi-export.
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*/
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export default function isExportFrom(tokens) {
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let closeBraceIndex = tokens.currentIndex();
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while (!tokens.matches1AtIndex(closeBraceIndex, tt.braceR)) {
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closeBraceIndex++;
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}
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return (
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tokens.matchesContextualAtIndex(closeBraceIndex + 1, ContextualKeyword._from) &&
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tokens.matches1AtIndex(closeBraceIndex + 2, tt.string)
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);
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}
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