v6.4.0

Observable changes

HTML elements with class and style attributes may render with additional whitespace. This is due to an optimization to improve the render time of Lightning Web Components.

This change is exactly the same as what we've reported in previous releases, and can be fixed by avoiding anti-patterns for styling components. E.g.:

/* Don’t do this */
document.querySelector('[class="highlight yellow"]');
/* Do this instead */
document.querySelector(".highlight.yellow");

The difference now is that this change may be seen in more components than before.

What's Changed

• perf: apply static parts optimization to dynamic attributes by @jmsjtu in #4055
• fix: fix iframe onload with static content optimization by @nolanlawson in #4082
• fix: remove unnecessary nullish coalescing by @nolanlawson in #4086
• chore: update non-breaking dependencies by @jye-sf in #4085
• perf: Apply static parts optimization to dynamic style by @jmsjtu in #4084
• perf(synthetic-shadow): optimize recursivelySetShadowResolver by @nolanlawson in #4088
• perf(template-compiler): support key in static content by @nolanlawson in #4091
• perf: optimize createUpgradableConstructor by @nolanlawson in #4092
• perf: apply static parts optimization to dynamic class attributes by @jmsjtu in #4071
• chore: update jest snapshot by @nolanlawson in #4095
• fix: support arguments for FACE callbacks by @nolanlawson in #4094
• fix(engine-core): fix warnings for invalid keys by @nolanlawson in #4097
• perf(engine-core): optimize patchClassAttribute by @nolanlawson in #4102
• fix: error accessing tagName on fragment by @jmsjtu in #4103
• perf: apply static parts optimization to dynamic text by @jmsjtu in #4099
• fix: children and childNodes not returning top-level slotted children by @abdulsattar in #4098
• fix: add signals as dependency by @jmsjtu in #4106

Full Changelog: v6.3.4...v6.4.0

v5.0.10

chore: v5.0.10 (#4083)

v6.3.4

What's Changed

• perf: add js-framework-benchmark tests by @nolanlawson in #4069
• perf: add throttling to tachometer benchmarks by @nolanlawson in #4070
• fix: remove support for LWC v5 compiler by @nolanlawson in #4059
• chore: filter @lwc/engine-server fixture test warnings for lwc:dynamic only by @jmsjtu in #4072
• chore: release v6.3.4 by @jye-sf in #4074
• chore: release v6.3.4 by @jye-sf in #4075

Full Changelog: v6.3.3...v6.3.4

v6.3.3

What's Changed

• chore: new year, new emoji 🚀 by @wjhsf in #4030
• test: consistent fixture tests for disallowed @api props by @nolanlawson in #4045
• chore: remove unused eslint rules @W-15228939 by @wjhsf in #4053
• test: reproduce timing issue with renderedCallback by @nolanlawson in #4058
• chore: clean up karma env by @wjhsf in #4060
• feat: add ability to use skip/only with test fixtures @W-15228939 by @wjhsf in #4054
• fix(synthetic-shadow): account for both non-shadowed targets and targets shadowed by native shadow roots by @ekashida in #4050
• chore: bump transitive deps by @nolanlawson in #4064
• fix(template-compiler): robust validation of complex template expressions by @ekashida in #4063
• fix(template-compiler): add complex template expression binding support for computed properties by @ekashida in #4065
• chore: release v6.3.3 by @ekashida in #4066
• Release v6.3.3 by @ekashida in #4068

Full Changelog: v6.3.2...v6.3.3

v6.3.2

What's Changed

• fix: disable form association entirely on older API versions by @nolanlawson in #4041
• Revert "fix(synthetic-shadow): retargeting does not correctly account for native shadow roots" by @ekashida in #4047
• chore: routine dependencies update by @ravijayaramappa in #4046
• chore: release v6.3.2 by @ravijayaramappa in #4049

Full Changelog: v6.3.0...v6.3.2

v6.3.1

What's Changed

• test: add test for wired properties from consts by @nolanlawson in #4032
• refactor: apply formAssociated on demand and enable for CustomElementConstructor by @jmsjtu in #4035

Full Changelog: v6.3.0...v6.3.1

v6.3.0

Full Changelog: v6.3.4...v6.3.0

What's Changed

• refactor: move fragment cache-busting to Karma-only by @nolanlawson in #4025
• fix(template-compiler): avoid mutating the ast when binding complex template expressions by @ekashida in #4026
• docs: add more JSDoc for top-level exports @W-13278716 by @wjhsf in #4028
• chore: avoid @ts-ignore by @wjhsf in #4027
• test: enable test for native shadow by @ekashida in #4031
• fix: event listener not being invoked for native web components by @jye-sf in #4012
• feat: support generating inlined sourcemaps when transforming js file… by @jye-sf in #4033
• fix(template-compiler): avoid discarding text content whitespace for complex expressions by @ekashida in #4029

Full Changelog: v6.2.1...v6.3.0

v6.2.1

What's Changed

• fix: isObject doesn't actually narrow down to just an object by @wjhsf in #4003
• docs: add JSDoc for @lwc/shared language features @W-13278716 by @wjhsf in #4007
• chore(eslint): add JSDOC plugin @W-13278716 by @wjhsf in #4006
• chore: pin CI tests to chrome 121 by @nolanlawson in #4010
• test(integration-karma): improve lifecycle timing tests by @nolanlawson in #4009
• chore: more JSDoc rules! @W-13278716 by @wjhsf in #4008
• fix(synthetic-shadow): retargeting does not correctly account for native shadow roots by @ekashida in #4018
• chore: update dependencies by @rui-rayqiu in #4019
• test: add tests for invocation order in light DOM by @nolanlawson in #4016
• docs: add JSDoc for some exports @W-13278716 by @wjhsf in #4014
• fix: revert update to karma to see if the intermittent test failure is caused by this by @rui-rayqiu in #4021
• test: add test to confirm export behavior by @nolanlawson in #4022
• chore: release v6.2.1 by @rui-rayqiu in #4023
• chore: release v6.2.1 by @rui-rayqiu in #4024

Full Changelog: v6.2.0...v6.2.1

v6.2.0

Contains signal implementation in LWC and a few other bug fixes.

What's Changed

• feat: signals implementation v1 by @jmsjtu in #3963
• feat: add reporting for shadowSupportMode by @jye-sf in #3980
• refactor: disable formAssociated on custom element constructor by @jmsjtu in #3984
• chore: Update target to es2021 by @ekashida in #3988
• chore: remove punctuation from filenames by @wjhsf in #3994
• chore: facilitate manual type checking @W-15023469 by @wjhsf in #3992
• chore: leverage the full power of @typescript-eslint @W-15024672 by @wjhsf in #3995
• refactor: avoid calling traverseAndSetElement on every rerender by @jmsjtu in #3998
• fix: add default exports to lwc @W-13710298 by @wjhsf in #3997
• build(deps): bump ip from 1.1.8 to 1.1.9 by @dependabot in #4001
• chore: release v6.2.0 by @rax-it in #4004
• chore: release v6.2.0 by @rax-it in #4005

New Contributors

• @rax-it made their first contribution in #4004

Full Changelog: v6.1.1...v6.2.0

v5.0.9

What's Changed

• feat: add reporting for shadowSupportMode (#3980) by @jye-sf in #3982
• chore: release v5.0.9 by @jye-sf in #3996

Full Changelog: v5.0.8...v5.0.9