@lune-js/context

Optimized context library to manage state and behavior in Lune.js.

NOTE

This package is published only for typing and building custom renderers in Lune.js. It is NOT recommended to install as a standalone package.

Expressions

The expression engine lives here. evaluate runs a single expression and execute runs a statement list, both against a scope and an optional element. Sources go through this package's own lexer, parser and compiler rather than the Function constructor, so a renderer built on it inherits the CSP compatibility described in lune-js, which also documents the supported language subset and the identifier resolution order.

Two pieces of state belong to the module rather than to a Context:

• The compiled expression cache, keyed by source text. A source compiled while rendering one context is reused by every other context in the same copy of the package.
• The registry written by allowGlobals, which adds identifiers the engine resolves last, after locals, the scope and the $el/$data aliases. It is engine wide because identifier resolution runs with a scope and an element in hand and never a context, so a registration has no app or context to be scoped to. A value that should reach one app only belongs in that app's scope instead. See Application globals for the full semantics.