Evaluates ${...} expressions with the project's own @celljs/core (@celljs/core/el), so build-time
and runtime evaluation are the same code: references between keys resolve in any order, and what an
expression returns (an environment variable, for instance) is never evaluated again.
Evaluates target in place and returns it. The objects of extra (e.g. env) are visible to the
expressions as they are, without being evaluated, and are removed afterwards.
Evaluates
${...}expressions with the project's own @celljs/core (@celljs/core/el), so build-time and runtime evaluation are the same code: references between keys resolve in any order, and what an expression returns (an environment variable, for instance) is never evaluated again.