fix(runtime): emit null for keyed root value

this is what jsonpath-plus does
P0lip · Feb 4, 2024 · edab477 · edab477
1 parent c661f20
commit edab477
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Showing 4 changed files with 27 additions and 5 deletions.
diff --git a/src/__tests__/index.test.mjs b/src/__tests__/index.test.mjs
@@ -1430,6 +1430,28 @@ describe('Nimma', () => {
  });
  });
 
+ it('$..info^^', () => {
+ const document = {
+ info: {},
+ };
+
+ const collected = collect(document, ['$..info^^']);
+
+ expect(collected).to.deep.eq({});
+ });
+
+ it('$..info^~', () => {
+ const document = {
+ info: {},
+ };
+
+ const collected = collect(document, ['$..info^~']);
+
+ expect(collected).to.deep.eq({
+ '$..info^~': [[null, []]],
+ });
+ });
+
  forEach([
  Object.preventExtensions({
  shirts: Object.seal({

diff --git a/src/runtime/codegen-functions/in-bounds.mjs b/src/runtime/codegen-functions/in-bounds.mjs
@@ -1,5 +1,5 @@
 export default function (sandbox, pos, start, end, step) {
- const value = sandbox.parentAt(-1);
+ const value = sandbox.valueAt(-1);
  const actualStart =
  start < 0
  ? Math.max(0, start + value.length)

diff --git a/src/runtime/sandbox.mjs b/src/runtime/sandbox.mjs
@@ -22,7 +22,7 @@ export class Sandbox {
  return dumpPath(this.#path);
  }
 
- parentAt(i) {
+ valueAt(i) {
  return this.#history[this.#path.length + i];
  }
 

diff --git a/src/runtime/scope.mjs b/src/runtime/scope.mjs
@@ -117,8 +117,8 @@ export default class Scope {
  let path;
  let value;
  if (pos > 0) {
- path = this.path.slice(0, Math.max(0, this.path.length - pos));
- value = this.sandbox.parentAt(-pos);
+ path = this.path.slice(0, this.path.length - pos);
+ value = this.sandbox.valueAt(-pos);
  } else {
  path = this.path.slice();
  value = this.sandbox.value;
@@ -129,7 +129,7 @@ export default class Scope {
  } else {
  fn({
  path,
- value: path.length === 0 ? void 0 : path[path.length - 1],
+ value: path.length === 0 ? null : path[path.length - 1],
  });
  }
  }