Module interpolate 

${{ env.NAME }} string templates — the safe stand-in for upstream’s !js interpolation. No expression evaluation.

Functions

interpolate_node

Recursively expand templates in every string of the value tree using process environment variables.

interpolate_node_with

Recursively expand templates using a caller-supplied lookup (see interpolate_str_with).

interpolate_str

Expand every ${{ env.NAME }} template inside the string using process environment variables.

interpolate_str_with

Expand templates using a caller-supplied lookup, which maps an expression like env.NAME to its value. Ok(None) means the expression is well-formed but has no value; an Err rejects the expression outright.