Incorrect width for some letters with diacritic marks

[acarl005]

const eaw = require("eastasianwidth")
eaw.characterLength("ì") // 2

This should be length 1 instead of 2.

[seachicken]

This is the same issue here

System.out.println(UCharacter.getIntPropertyValue('ì', UProperty.EAST_ASIAN_WIDTH)); // UCharacter.EastAsianWidth.AMBIGUOUS;