ast-types.js

ast-types.js

var assert = require("assert");
var n = require("ast-types").namedTypes;
var b = require("ast-types").builders;

var fooId = b.identifier("foo");
var ifFoo = b.ifStatement(fooId, b.blockStatement([
    b.expressionStatement(b.callExpression(fooId, []))
]));

assert.ok(n.IfStatement.check(ifFoo));
assert.ok(n.Statement.check(ifFoo));
assert.ok(n.Node.check(ifFoo));

assert.ok(n.BlockStatement.check(ifFoo.consequent));
assert.strictEqual(
    ifFoo.consequent.body[0].expression.arguments.length,
    0);

assert.strictEqual(ifFoo.test, fooId);
assert.ok(n.Expression.check(ifFoo.test));
assert.ok(n.Identifier.check(ifFoo.test));
assert.ok(!n.Statement.check(ifFoo.test));