repl: fix repl crashing on variable declarations without init · nodejs/node@467dbd3

// what we can potentially complete on, so let's re-run the function's logic on that

if (lastBodyStatement.type === 'VariableDeclaration') {

const lastDeclarationInit = lastBodyStatement.declarations.at(-1).init;

if (!lastDeclarationInit) {

// If there is no initialization we can simply return

return null;

}

const lastDeclarationInitCode = code.slice(lastDeclarationInit.start, lastDeclarationInit.end);

return findExpressionCompleteTarget(lastDeclarationInitCode);

}

}

describe('REPL tab completion (core functionality)', () => {

it('does not break with variable declarations without an initialization', () => {

const { replServer } = prepareREPL();

replServer.complete('let a', getNoResultsFunction());

replServer.close();

});

it('does not break in an object literal', () => {

const { replServer, input } = prepareREPL();