September 2018 (version 1.17.0-beta)

1.17.0 Update

Hello!

Welcome to the new DeepScan updates. Although our original plan was to release in next month bringing with the team support, we wanted to release quickly a number of updates that we hope you will like.

Please kindly go ahead with the highlights for this release.

Release Summary

This version includes a number of updates that we hope you’ve found some of them helpful.
The key highlights are:

Enhanced TypeScript support - We've enhanced TypeScript support to the 2.9 from 2.5! Try it out.
New rules - More Vue.js specialized rules arrive!

New Rules

New rules introduced in this release:

VUE_BAD_PROPERTY_SET_DELETE - Check for an invalid argument of Vue.set() and Vue.delete()
VUE_BAD_TRANSITION_GROUP - Check for an invalid use of transition-group in Vue template
VUE_TEMPLATE_WITH_V_SHOW - Do not have v-show directive in a <template>
VUE_TEXTAREA_WITH_USELESS_CHILDREN - Do not have children elements under <textarea v-model>
VUE_V_BIND_ON_DIRECTIVE - Do not use v-bind on Vue directives
VUE_V_IF_WITH_V_FOR - Check for loop variable usage when v-if and v-for directives are used together

Improved Rules

BAD_TYPEOF_COMPARISON is enhanced with data-flow analysis
BAD_BITWISE_OPERATOR is fine-tuned for more alarm detection
FORIN_ARRAY is fine-tuned for more alarm detection
INSUFFICIENT_NULL_CHECK is fine-tuned for more alarm detection

Enhanced TypeScript Support

We are happy to announce the TypeScript 2.9 support.

To date, we promised TypeScript 2.5 support, but now we get to support TypeScript 2.9! So you can analyze your code leveraging the latest features like:

Numeric Separators
Definite Assignment Assertion
Conditional Types
Generic type arguments in JSX elements

Note that the import() types feature is not yet supported.

Miscellaneous

Impact is lowered to Medium for BAD_BITWISE_OPERATOR alarms on | operator

Bug Fixes

UNUSED_VAR_ASSIGN alarm message is sometimes invalid for let variables inside loop

Thank You

Thank you to the following folks who help to make DeepScan better:

@gene kindly reported some silly alarms about latest TypeScript features