Specs

interpolate_env(map :: map()) :: map()

Interpolates environment variables into the values of a given map.

Iterates over each key-value pair in the map, replacing placeholders in the values with the corresponding environment variable values. If an environment variable is missing, a RuntimeError is raised indicating the missing variable.

Parameters

• map: A map with string values possibly containing placeholders for environment variables in the format ${env:VAR_NAME}.

Returns

• A new map with the same keys but with interpolated values.

Examples

iex> StringInterpolator.interpolate_env(%{"greeting" => "Hello, ${env:USER}"})
%{"greeting" => "Hello, Alice"}

Errors

• Raises RuntimeError if an environment variable referenced in a value does not exist.