regex - How to get token before dot('.') at current cursor postion in javascript for autocompletion in codemirror editor? -

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function (editor, currentpos) {     return editor.gettokenat(currentpos); }

i designing code editor custom language. so, want autocompletion based on mode state. want token before . when press ctrl + space during hello. then, method should give me hello can suggest properties related it. how can this?

the javascript-hint addon this, continuing previous token in loop until finds not property. want code looks similar.


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