Describe the bug
When I try to overwrite the config of parse I get the first error when I specify only one option "ERROR".

Type '{ raw: string; }' is missing the following properties from type '{ exec: string; interpolate: string; raw: string; }': exec, interpolatedeno-ts(2739)
(property) parse?: {
    exec: string;
    interpolate: string;
    raw: string;
} | undefined

If I specify all options (even if I leave them default except one in my case raw) the engine renders the templates wrong, unfortunately I don't get an error there

To Reproduce
Steps to reproduce the behavior:

1. Define the Settings with: parse: { raw: "-" }
2. Hover over parse

Seccond Problem:

1. Define the Settings with: parse: { exec: "", interpolate: "=", raw: "-" }
2. Create a EJS file with the new "raw"
3. Render the Template

Expected behavior
First Problem:
that I do not get an error when I want to change only 1 config

Seccond Problem:
that the template is rendered with my newly defined config

Screenshots
If applicable, add screenshots to help explain your problem.

Package & Environment Details

• Environment: deno 1.12.0+1ad6575 (canary, x86_64-pc-windows-msvc), v8 9.2.230.14, typescript 4.3.2, Eta v1.12.3