MorphASTDraft.js

interface Node {
    type: string;
    loc: SourceLocation | null;
}

interface SourceLocation {
    source: string | null;
    start: Position;
    end: Position;
}

interface Position {
    line: number; // >= 1
    column: number; // >= 0
}


interface Program <: Node {
    type: "Program";
    body: [ Foo ];
}


interface Foo <: Node {
  OutputVariables: [ Bar ];
  inputVariables: [ Baz ];
  index: number;
}

interface Import <: Foo {
    type: "Import";
    inputVariables: [];
}


interface Block <: Foo {
    type: "Block";
    code: string;
    params: [ string ];
    extension: string;
}