Vscode language server extension connection.onCompletion - visual-studio-code

Question

I am creating a language server. Specifically, the issue is with completions. I'm returning a big list of completion items but whenever I test my language the completion provider simply will not suggest anything after I type a dot(.) when I'm expecting it to suggest, essentially, class members associated with the symbol left of said dot(.). Don't get me wrong, suggestions work until I type the dot(.) character and then it says, "No Suggestions".
Also, I'm trying to implement this server side and not client side.
EDIT:
Essentially, I'm assembling a big list and returning it.
connection.onInitialize((params: node.InitializeParams) => {
workspaceFolder = params.workspaceFolders![0].uri;
const capabilities = params.capabilities;
// Does the client support the `workspace/configuration` request?
// If not, we fall back using global settings.
hasConfigurationCapability = !!(
capabilities.workspace && !!capabilities.workspace.configuration
);
hasWorkspaceFolderCapability = !!(
capabilities.workspace && !!capabilities.workspace.workspaceFolders
);
hasDiagnosticRelatedInformationCapability = !!(
capabilities.textDocument &&
capabilities.textDocument.publishDiagnostics &&
capabilities.textDocument.publishDiagnostics.relatedInformation
);
capabilities.workspace!.workspaceEdit!.documentChanges = true;
const result: node.InitializeResult = {
capabilities: {
textDocumentSync: node.TextDocumentSyncKind.Incremental,
colorProvider: true,
hoverProvider: true,
definitionProvider: true,
typeDefinitionProvider: true,
referencesProvider: true,
documentHighlightProvider: true,
documentSymbolProvider: true,
workspaceSymbolProvider: true,
// codeActionProvider: true,
codeLensProvider: {
resolveProvider: true,
workDoneProgress: false
},
// Tell the client that this server supports code completion.
completionProvider: {
resolveProvider: true,
workDoneProgress: false,
triggerCharacters: ['.', '/'],
allCommitCharacters: ['.']
},
signatureHelpProvider: {
triggerCharacters: ['('],
retriggerCharacters: [','],
workDoneProgress: false
},
executeCommandProvider: {
commands: ["compile"],
workDoneProgress: false
},
semanticTokensProvider: {
documentSelector: [{ scheme: 'file', language: 'agc' }],
legend: {
tokenTypes: gTokenTypes,
tokenModifiers: gTokenModifiers
},
full: true,
workDoneProgress: false
}
}
};
if (hasWorkspaceFolderCapability) {
result.capabilities.workspace = {
workspaceFolders: {
supported: true
}
};
}
return result;
});
// This handler provides the initial list of the completion items.
connection.onCompletion(
async (params: node.TextDocumentPositionParams): Promise<node.CompletionItem[] | node.CompletionList | undefined> => {
console.log("completion");
let doc = documents.get(params.textDocument.uri);
let list:node.CompletionList = node.CompletionList.create([], true);
list.items = list.items.concat(comp.GetAGKKeywordCompletionItems(), comp.GetAGKCommandCompletionItems(), agkDocs.getALLCompletionItems());
list.items.push(sense.GetCommentSnippetCompletionItem(doc, params.position));
list.items.push(sense.GetCommentSnippetCompletionItem(doc, params.position, true));
console.log("END completion");
return list;
}
);