Complete the most suitable text at the location of the <MASK>.
The <MASK> is located within a Markdown codeblock, written in the language {{LANGUAGE}}. 
Your answer must complete this code block in the language {{LANGUAGE}}.
Your answer must not complete any text outside this code block.
Your answer must not overlap with any text adjacent to the <MASK>.
Your answer must have the following format:
<LANGUAGE>
Here, you write the language of your response e.g. English, Chinese, TypeScript, Python.
<THOUGHT>
Here, you reason about the answer, using the 80/20 rule for clarity and conciseness.
<INSERT>
Here, you write the text that should be inserted at the location of the <MASK>.