Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | 1x 1x 1x 1x 1x 1x 6x 6x 6x 6x 6x 1x 6x 6x 6x 6x 343x 343x 343x 13x 13x 343x 6x 6x 6x 1x 13x 13x 13x 13x 13x 13x 13x | import * as escodegen from 'escodegen';
import * as espree from 'espree';
import * as estraverse from 'estraverse';
import * as fs from 'fs/promises';
export async function transpile(inputFile, outputFile) {
let input = await fs.readFile(inputFile, 'utf8');
const output = addLogging(input);
if (outputFile === undefined) {
console.log(output);
return;
}
await fs.writeFile(outputFile, output);
}
function addLogging(code) {
const ast = espree.parse(code, { ecmaVersion: 6, loc: true });
estraverse.traverse(ast, {
enter: function(node, parent) {
if (node.type === 'FunctionDeclaration' ||
node.type === 'FunctionExpression' ||
node.type === 'ArrowFunctionExpression') {
addBeforeCode(node);
}
}
});
return escodegen.generate(ast);
}
function addBeforeCode(node) {
const name = node.id ? node.id.name : '<anonymous function>';
const params = node.params.map(param => '${' +param.name + '}').join(', ');
const beforeCode = 'console.log(\`Entering ' + name + '(' + params + ') at line ' + node.loc.start.line + '\`);';
const beforeNodes = espree.parse(beforeCode, { ecmaVersion: 6 }).body;
node.body.body = beforeNodes.concat(node.body.body);
} |