completer 函数的使用
🌐 Use of the completer function
completer 函数以用户输入的当前行作为参数,并返回一个包含两个条目的数组:
🌐 The completer function takes the current line entered by the user
as an argument, and returns an Array with 2 entries:
- 一个包含匹配完成条目的数组。
- 用于匹配的子字符串。
例如:[[substr1, substr2, ...], originalsubstring]。
🌐 For instance: [[substr1, substr2, ...], originalsubstring].
function completer(line) {
const completions = '.help .error .exit .quit .q'.split(' ');
const hits = completions.filter((c) => c.startsWith(line));
// Show all completions if none found
return [hits.length ? hits : completions, line];
} completer 函数也可以返回一个 <Promise>,或者是异步的:
🌐 The completer function can also return a <Promise>, or be asynchronous:
async function completer(linePartial) {
await someAsyncWork();
return [['123'], linePartial];
}