Using a single import statement per module will make the code clearer because you can see everything being imported from that module on one line.

In the following example the module import on line 1 is repeated on line 3. These can be combined to make the list of imports more succinct.

import { merge } from 'module';
import something from 'another-module';
import { find } from 'module';

Bad Practice

import { merge } from 'module';
import something from 'another-module';
import { find } from 'module';

Recommended

import { merge, find } from 'module';
import something from 'another-module';