August 2020 (version 1.40.0)

1.40.0 Update

Welcome to the new DeepScan updates!

Please kindly go ahead with the highlights for the latest release.

New Rules

The following Vue.js rules are introduced:

VUE_BAD_DIRECTIVE_VALUE - Do not use the values of wrong types at Vue directives
VUE_BAD_EVENT_HANDLER_RETURN_FALSE - Do not use return false to stop a propagation in the Vue event handler
VUE_IDENTICAL_BRANCHES_IN_TEMPLATE - Check for the same implementation in the branches of v-if directive
VUE_MISMATCHED_TYPE_OF_PROP - Do not use the prop values of incorrect prop types in the Vue component
VUE_MISUSED_V_FOR_VAR - Do not use the first variable of v-for directives as an index of the array
VUE_REDUNDANT_INLINE_EVENT_HANDLER - Check for the unnecessary inline event handler in Vue
VUE_REDUNDANT_REF_ATTRIBUTE - Do not define a ref attribute redundantly

Analysis Improvements

Improve analysis precision of inline JavaScript code inside Vue template
Improve analysis precision by reflecting Vue prop type declarations
Improve analysis precision of Vue computed properties by reflecting the getter return values
Detect TOO_MANY_ARGS alarms at method calls inside Vue SFC
Detect BAD_ASSIGN_IN_CONDITON and CONSTANT_CONDITION alarms at Vue v-show expression

New Settings: Commit Status

To date, the pull request was set failure when any unresolved new issues were found. Then the failed check blocked to merge the pull request for repositories with required status checks.

Now you can fine control your commit status checks by detected issues' priority. If you want to ignore all issues or the issues with lower impacts, check out the Commit Status setting in the project settings and choose your preference. Commit status setting

Miscellaneous

Increase the maxBuffer for the stable execution of ESLint analysis

Bug Fixes

A false alarm for CALL_NON_FUNC may occur if TypeScript type parameter is used inside optional chaining
A false alarm for UNUSED_DECL occurs if named function expression is used at Vue v-on directive
A false alarm for SYNTAX_ERROR may occur if parentheses are used inside the pattern expression of Vue v-for directive
False alarms for REACT_MISMATCHED_TYPE_OF_PROP and REACT_USELESS_PROP_TYPES may occur for class components having decorators
Analyzer may abnormally terminate when Vue directive with an empty name is used