lib/rules/no-unmodified-loop-condition.js
function getEncloseFunctionDeclaration(reference) {
    let node = reference.identifier;

    while (node) {
        if (node.type === "FunctionDeclaration") {
            return node.id ? node : null;
        }

        node = node.parent;
    }

    return null;
}
function getEncloseFunctionDeclaration(reference) {
    let node = reference.identifier;

    while (node) {
        if (node.type === "FunctionDeclaration") {
            return node.id ? node : null;
        }

        node = node.parent;
    }

    return null;
}
function getEncloseFunctionDeclaration ( reference ) { let node = reference . identifier ; while ( node ) { if ( node . type === "FunctionDeclaration" ) { return node . id ? node : null ; } node = node . parent ; } return null ; }
Gets the function which encloses a given reference.
This supports only FunctionDeclaration.

@param {eslint-scope.Reference} reference - A reference to get.
@returns {ASTNode|null} The function node or null.
Gets the function which encloses a given reference . This supports only FunctionDeclaration .