Function isOwnChild

test/fixtures/snapshot/typescript.js:141286–141289

(n, parent)

        // We want to merge own children like `I` in in `module A { interface I {} } module A { interface I {} }`
        // We don't want to merge unrelated children like `m` in `const o = { a: { m() {} }, b: { m() {} } };`
        function isOwnChild(n, parent) {
            var par = ts.isModuleBlock(n.parent) ? n.parent.parent : n.parent;
            return par === parent.node || ts.contains(parent.additionalNodes, par);
        }
        // We use 1 NavNode to represent 'A.B.C', but there are multiple source nodes.
        // Only merge module nodes that have the same chain. Don't merge 'A.B.C' with 'A'!
        function areSameModule(a, b) {