lib/util/ast-utils.js
function getOpeningParenOfParams(node, sourceCode) {
    return node.id
        ? sourceCode.getTokenAfter(node.id, isOpeningParenToken)
        : sourceCode.getFirstToken(node, isOpeningParenToken);
}
function getOpeningParenOfParams(node, sourceCode) {
    return node.id
        ? sourceCode.getTokenAfter(node.id, isOpeningParenToken)
        : sourceCode.getFirstToken(node, isOpeningParenToken);
}
function getOpeningParenOfParams ( node , sourceCode ) { return node . id ? sourceCode . getTokenAfter ( node . id , isOpeningParenToken ) : sourceCode . getFirstToken ( node , isOpeningParenToken ) ; }
Gets the `(` token of the given function node.

@param {ASTNode} node - The function node to get.
@param {SourceCode} sourceCode - The source code object to get tokens.
@returns {Token} `(` token.
Gets the ( token of the given function node .