MARKLESS_TEMPLATE_EXPRESSION_STATIC
A markup expression reads state but never updates.
Warning from the compiler, while it builds your .tsrx files.
What happened
Today, only plain reads like {label} update the page. This expression does more than read, so it shows its first value and never changes.
Markless prints the message, the reason, and a suggestion:
MARKLESS_TEMPLATE_EXPRESSION_STATIC: This text reads `<readSource>`, but only plain reads like `{<readSource>}` update the page today. The expression renders its initial value and never changes when `<readSource>` changes.
Each template read compiles to a graph subscription with a DOM-update record; composite expressions are not lowered yet, so no subscription exists to wake this text.
Hoist the logic into a derived value: `const label = computed(() => a ? 'x' : 'y');` with `<p>{label}</p>`.
https://markless.dev/errors/MARKLESS_TEMPLATE_EXPRESSION_STATICWords in angle brackets change from case to case.
How to fix it
Move the logic into computed() and render the result.
const label = computed(() => (open ? 'Hide' : 'Show'));
<button>{label}</button>If you accept the warning on purpose, put this comment on the line above it:
// markless-allow MARKLESS_TEMPLATE_EXPRESSION_STATIC: the reason you accept itWhere it comes from
@markless/compiler raises this code. Source:
Read how to read a Markless error, or go back to all error codes.