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import type { Node } from 'acorn';
import { parseExpression } from '@babel/parser';
// import acorn from 'acorn';
// // @ts-ignore
// import jsx from 'acorn-jsx';
// const acornJsx = acorn.Parser.extend(jsx());
export const parse = (source: string): Node => {
throw new Error('No longer used.');
// acorn.parse(source, {
// sourceType: 'module',
// ecmaVersion: 2020,
// locations: true,
// });
};
export const parse_expression_at = (source: string, index: number): number => {
// TODO: Clean up after acorn -> @babel/parser move
try {
// First, try to parse the expression. Unlike acorn, @babel/parser isn't relaxed
// enough to just stop after the first expression, so we almost always expect a
// parser error here instead. This is expected, so handle it.
parseExpression(source.slice(index), {
sourceType: 'module',
plugins: ['jsx', 'typescript'],
});
throw new Error('Parse error.'); // Expected to fail.
} catch (err) {
if (err.message.startsWith('Unexpected token') && source[index + err.pos] === '}') {
return index + err.pos;
}
if (err.pos) {
err.pos = index + err.pos;
}
throw err;
}
};
// acornJsx.parseExpressionAt(source, index, {
// sourceType: 'module',
// ecmaVersion: 2020,
// locations: true,
// });
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