/
ts-parser.ts
36 lines (34 loc) · 1.08 KB
/
ts-parser.ts
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import { types } from '@babel/core';
import { parseAsync } from '@babel/core';
import { AstFormat, TSAst } from '../syntax';
/**
* See https://babeljs.io/docs/en/babel-preset-typescript
* @param text The text to parse
* @param fileName The name of the file
*/
export async function parse(text: string, fileName: string): Promise<TSAst> {
const isTSX = fileName.endsWith('x');
const ast = await parseAsync(text, {
filename: fileName,
parserOpts: {
ranges: true,
},
configFile: false,
babelrc: false,
presets: [[require.resolve('@babel/preset-typescript'), { isTSX, allExtensions: true }]],
plugins: [
require.resolve('@babel/plugin-proposal-class-properties'),
require.resolve('@babel/plugin-proposal-private-methods'),
[require.resolve('@babel/plugin-proposal-decorators'), { legacy: true }],
],
});
if (types.isProgram(ast)) {
throw new Error(`Expected ${fileName} to contain a babel.types.file, but was a program`);
}
return {
originFileName: fileName,
rawContent: text,
format: AstFormat.TS,
root: ast!,
};
}