JS: Make API graphs use steps from summaries #19012
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…ement() Although they mean slightly different things, every single call site of getUnknownMember() just used it as a way to get array elements. Since there is no known use-case for the original meaning of getUnknownMember() I am deprecating it for now.
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The use of AnyMember was a workaround until the bugfix in this PR landed.
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Pull Request Overview
This pull request updates API graphs to use steps from summaries and refactors how array elements are handled in various test and configuration files.
- Updates the tests by adding an array source function to exercise new API graph handling.
- Changes the dynamic property read in the API graph to use ArrayElement.
- Modifies configuration files for test extensions and tanstack models to support the new array element representation.
Reviewed Changes
Copilot reviewed 5 out of 18 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| javascript/ql/test/library-tests/frameworks/data/test.js | Adds tests for array source function calls using testlib. |
| javascript/ql/test/ApiGraphs/dynamic-prop-read/index.js | Updates the dynamic call from getUnknownMember() to getArrayElement(). |
| javascript/ql/test/library-tests/frameworks/data/test.ext.yml | Extends test configuration with ArrayElement return for testlib. |
| javascript/ql/lib/ext/tanstack.model.yml | Adjusts tanstack API queries to return ArrayElement for useQueries. |
| javascript/ql/test/query-tests/Security/CWE-079/DomBasedXssWithResponseThreat/testUseQueries.vue | Updates comment markers to reflect correct source and alert tags. |
Files not reviewed (13)
- javascript/ql/lib/semmle/javascript/ApiGraphs.qll: Language not supported
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- javascript/ql/lib/semmle/javascript/frameworks/Vuex.qll: Language not supported
- javascript/ql/lib/semmle/javascript/frameworks/data/internal/ApiGraphModelsSpecific.qll: Language not supported
- javascript/ql/lib/semmle/javascript/internal/CachedStages.qll: Language not supported
- javascript/ql/lib/semmle/javascript/internal/flow_summaries/Arrays.qll: Language not supported
- javascript/ql/lib/semmle/javascript/security/dataflow/ExternalAPIUsedWithUntrustedDataCustomizations.qll: Language not supported
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erik-krogh
approved these changes
Mar 18, 2025
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Makes API graphs use
Contentinternally and use steps from summaries.Steps from summaries are already converted into type-tracking steps, we just need to use them in API graphs.
The handling of
Content/ContentSetis the same as in Ruby: the graph is generated usinggetAStoreContent(both for use and def nodes) and queried usinggetAReadContent. We want to avoid materialising a graph based ongetAReadContent()because that set can be huge.Based on this we can now implement
getArrayElement()properly. This looks through things like.map()and.pop()based on the existing models for arrays. This in turn fixes some issues with theArrayElementMaD token, as shown in the new test case.