parse_ts.js

// parse_ts.js

const fs = require('fs');
const ts = require('typescript');
const { tsquery } = require('@phenomnomnominal/tsquery');

let data = '';

process.stdin.on('data', function (chunk) {
    data += chunk;
});

process.stdin.on('end', function () {
    const sourceFile = ts.createSourceFile('temp.ts', data.toString(), ts.ScriptTarget.ES2015, true);

    // Define the node types that constitute a 'semantic chunk'
    const semanticChunkNodeTypes = [
        'FunctionDeclaration',
        'ArrowFunction',
        'ClassDeclaration',
        'InterfaceDeclaration',
        'EnumDeclaration',
        'TypeAliasDeclaration',
        'MethodDeclaration',
    ];

    const semanticChunks = semanticChunkNodeTypes.flatMap(nodeType =>
        tsquery(sourceFile, nodeType)
    );

    const jsonl = semanticChunks.map(chunk => {
        const comments = ts.getLeadingCommentRanges(sourceFile.getFullText(), chunk.getFullStart()) || [];
        const commentTexts = comments.map(comment => sourceFile.getFullText().slice(comment.pos, comment.end)).join('\n');

        // Append the leading comments to the front of the chunk's content
        const contentWithComments = commentTexts + '\n' + chunk.getText(sourceFile);

        return JSON.stringify({
            type: ts.SyntaxKind[chunk.kind],
            content: contentWithComments
        });
    }).join('\n');

    fs.writeFileSync('semantic_chunks.jsonl', jsonl);
});