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Convert estree compatible JavaScript AST to babel AST.

To use parsers like:

• acorn
• cherow
• espree
• etc...

With babel tools like:

• @babel/traverse
• @babel/types
• etc...

The thing is @babel/parser has a little differences with estree standard:

• Property of ObjectExpression called ObjectProperty;
• FunctionExpression of a Property located in ObjectMethod node;
• File node;
• StringLiteral, NumericLiteral, NullLiteral, RegExpLiteral, BooleanLiteral instead of Literal;
• ClassMethod instead of MethodDefinition;
• ClassPrivateMethod;
• ClassPrivateName stores name as Identifier in id field;
• ClassPrivateProperty instead of FieldDefinition;
• etc...

estree-to-babel aims to smooth this differences.

Install

npm i estree-to-babel

Example

js
const cherow = require('cherow');
const toBabel = require('estree-to-babel');
const traverse = require('@babel/traverse').default;

const ast = toBabel(cherow.parse(`
    const f = ({a}) => a;
`));

traverse({
    ObjectProperty(path) {
        console.log(path.value.name);
        // output
        'a';
    },
});

License

MIT