为什么摩纳哥编辑的建议助手会在每敲击第二个字符后打开？

Question

我试图为摩纳哥编辑器实现我的自定义完成项提供程序，并且我期望每次击键都会调用completionItemProvider。相反，它会在每两个字符后触发。

function createDependencyProposals(range) {
    // returning a static list of proposals, not even looking at the prefix (filtering is done by the Monaco editor),
    // here you could do a server side lookup
    return [
        {
            label: '"lodash"',
            kind: monaco.languages.CompletionItemKind.Function,
            documentation: "The Lodash library exported as Node.js modules.",
            insertText: '"lodash": "*"',
            range: range
        },
        {
            label: '"express"',
            kind: monaco.languages.CompletionItemKind.Function,
            documentation: "Fast, unopinionated, minimalist web framework",
            insertText: '"express": "*"',
            range: range
        },
        {
            label: '"mkdirp"',
            kind: monaco.languages.CompletionItemKind.Function,
            documentation: "Recursively mkdir, like <code>mkdir -p</code>",
            insertText: '"mkdirp": "*"',
            range: range
        },
        {
            label: '"my-third-party-library"',
            kind: monaco.languages.CompletionItemKind.Function,
            documentation: "Describe your library here",
            insertText: '"${1:my-third-party-library}": "${2:1.2.3}"',
            insertTextRules: monaco.languages.CompletionItemInsertTextRule.InsertAsSnippet,
            range: range
        }
    ];
}


monaco.languages.registerCompletionItemProvider('json', {
    provideCompletionItems: function(model, position) {
        // find out if we are completing a property in the 'dependencies' object.
        var textUntilPosition = model.getValueInRange({startLineNumber: 1, startColumn: 1, endLineNumber: position.lineNumber, endColumn: position.column});
        console.log(textUntilPosition);
        var match = textUntilPosition.match(/"dependencies"\s*:\s*\{\s*("[^"]*"\s*:\s*"[^"]*"\s*,\s*)*([^"]*)?$/);
        if (!match) {
            return { suggestions: [] };
        }
        var word = model.getWordUntilPosition(position);
        var range = {
            startLineNumber: position.lineNumber,
            endLineNumber: position.lineNumber,
            startColumn: word.startColumn,
            endColumn: word.endColumn
        };
        return {
            suggestions: createDependencyProposals(range)
        };
    }
});

monaco.editor.create(document.getElementById("container"), {
    value: "{\n\t\"dependencies\": {\n\t\t\n\t}\n}\n",
    language: "json"
});

我在摩纳哥游乐场检查了这段代码，当时我非常快地输入了一些乱码。控制台日志向我展示了这一点

是否有任何配置可以使completionItemProvider 在每次击键时触发？或者任何有关此行为的解释都会有所帮助。

提前致谢！