The Tokenizer constructor calls createTrie(operators) and
createTrie(literalValues) on every instantiation, and liquidjs builds a
fresh Tokenizer per output/tag while parsing. On typical templates this
rebuilt the same prefix-tries dozens of times and showed up as a large
share of parse CPU in profiling.
Memoize createTrie with a module-level WeakMap keyed on the input object.
The inputs (operators, literalValues) are stable references and the trie
is only ever read afterward (via matchTrie), never mutated, so caching by
reference is behavior-preserving. WeakMap (not Map) lets short-lived,
per-instance operator objects and their tries be garbage collected.
* docs: add GitHub buttons and improve option docs
* chore: replace husky with prepush check
* docs: revamp homepage and switch to custom GitHub buttons
- Make the docs English-only by removing all zh-cn content, the language switcher UI, and related JS/config
- Rework homepage feature cards (Safe & Typed, Pure JavaScript, Shopify & Jekyll, Streaming) and refresh section colors/layout
- Replace buttons.github.io with custom Star/Sponsor buttons featuring a live star count and dark-mode support
- Drop the buttons.js script and tidy banner, header, footer, and share partials
Co-authored-by: Cursor <[email protected]>
* fix: restore tsconfig settings and changelog build
Re-add suppressImplicitAnyIndexErrors and downlevelIteration removed in
a75033e2c, which broke the rollup TypeScript build on CI. Drop zh-cn
changelog output now that translations were removed.
Co-authored-by: Cursor <[email protected]>
* fix: resolve TS errors without deprecated tsconfig options
Co-authored-by: Cursor <[email protected]>
---------
Co-authored-by: Cursor <[email protected]>
* fix(date): cap strftime widths and account padding in memoryLimit
- Clamp numeric strftime pad widths to MAX_STRFTIME_PAD (1024)
- Export estimateStrftimePaddingMemory for the date filter to charge memoryLimit
- Replace unbounded pad() concatenation loop with ch.repeat + single concat
- Add regression tests for clamping and memoryLimit on huge %width directives
Co-authored-by: Cursor <[email protected]>
* fix(date): harden strftime memory accounting and document security model
Move strftime memory charging into the same formatting path used for padding, enforce pre-allocation checks, and add regression tests for non-string date format PoCs. Add dedicated docs clarifying that memoryLimit is cooperative DoS mitigation and not strict heap isolation.
Co-authored-by: Cursor <[email protected]>
* docs(zh-cn): add security model docs for DoS limits
Add a Chinese security-model tutorial and link it from the Chinese DoS guide to clarify that memoryLimit is cooperative accounting, list uncounted custom conversion cases, and recommend avoiding fully user-defined templates in online services.
Co-authored-by: Cursor <[email protected]>
* docs: consolidate DoS docs into security-model pages
Merge DoS guidance into security-model docs in both English and Chinese, and remove the placeholder dos.md pages to avoid duplicate/redirect-only docs.
Co-authored-by: Cursor <[email protected]>
* docs: merge DoS details into security-model docs
Move the detailed parseLimit/renderLimit/memoryLimit explanations and examples into the English and Chinese security-model pages so content from the removed dos pages is preserved.
Co-authored-by: Cursor <[email protected]>
* docs: reorganize security-model structure for clarity
Restructure English and Chinese security-model docs into a consistent flow: security boundary, limits overview, per-limit details, and online service guidance.
Co-authored-by: Cursor <[email protected]>
* refactor(strftime): simplify %N width parsing logic
Use regex-backed width assumptions to simplify %N width normalization and padding memory accounting while keeping behavior equivalent.
Co-authored-by: Cursor <[email protected]>
* refactor(strftime): rely on memoryLimit for width control
Remove MAX_STRFTIME_PAD hard capping and rely on memoryLimit enforcement before padding allocation. Update strftime/date tests and security-model docs to match the new boundary and renderLimit caveats.
Co-authored-by: Cursor <[email protected]>
* fix(strftime): use add() once for padding, minimize churn
- pad(): replace per-char loop with a single add(str, ch.repeat(n)) call.
The earlier `probe[0] === ch` heuristic was wrong when ch happened to
equal a leading char of 'probe' (e.g. ch === 'p').
- strftime.ts: revert unrelated typing/structural refactors so the diff
contains only the memoryLimit threading and the %N memory charge.
- docs: rewire the deleted dos.html sidebar entry to security-model.html
(with localized labels) so the deleted page does not 404 from the
sidebar.
Co-authored-by: Cursor <[email protected]>
---------
Co-authored-by: Cursor <[email protected]>
Use _getFromScope for property access in sort/sort_natural filters to respect the ownPropertyOnly security option, preventing prototype chain traversal that could leak sensitive inherited properties.
Also extract shared sortBy helper, add orderedCompare with nil handling consistent with caseInsensitiveCompare and Ruby Liquid.
Made-with: Cursor
* fix: use realpath for fs.contains
* chore: reset file mode changes
Made-with: Cursor
* fix: Windows compat for contains/containsSync and toLiquidAsync arg order
Made-with: Cursor
* feat: static variable analysis
* Accept any iterable from `children`, `arguments`, etc.
* Test analysis of standard tags
* Use `TagToken.tokenizer` instead of creating a new one
* Test analysis of netsted tags
* Group variables by their root value
* Test analysis of nested globals and locals
* Analyze included and rendered templates WIP
* Use existing tokenizer when constructing `Hash`
* Improve test coverage
* Analyze variables from `layout` and `block` tags
* Test analysis of Jekyll style includes
* Handle variables that start with a nested variable
* Async analysis
* Test non-standard tag end to end
* Implement convenience analysis methods on the `Liquid` class
* More analysis convenience methods
* Accept string or template array
* Draft static analysis docs
* Deduplicate variables names
* Fix isolated scope global variable map
* Coerce variables to strings instead of extending String
* Private map instead of extending Map
* Fix e2e test
* Tentatively implement analysis of aliased variables
* Fix nested variable segments array
* Update docs sidebar
As written, the strftime module's `getSuffix` method (responsible for
returning a date's ordinal string) works correctly for all dates in a
month _except_ 11, 12, and 13.
The existing code would return a string based on the last digit of the
date. In American English, these three dates use the `th` suffix rather
than `st`, `nd`, or `rd`.
This refactor/bug fix draws inspiration from Rails' ActiveSupport
ordinal inflector:
https://github.com/rails/rails/blob/main/activesupport/lib/active_support/locale/en.rb
The Ruby code above is designed to work with any number, so the bug fix
to this library is simpler.
The test suite is also updated with additional examples to verify the
correctness of these changes.
