Use eslint rule to check the diff between var and let:
    "no-use-before-define": "off"
    "@typescript-eslint/no-use-before-define": 2
    no-redeclare: 2
    block-scoped-var: 2
    no-loop-func: 2
(2) By the way add some eslint rule and unify some code style.

* WIP(map): map path changed from geo coord to screen position

* WIP(map): works expect clicking map data

* test(map): add test for #11055

* fix(map): use for-loop instead of zrUtil.map

* test(map): test fill pattern in map

* test(map): update test with mousewheel

(2) Fix map label miss to enter formatter when missing data.
(3) Fix #9682

(2) fix map and pie in dataset.

Fix #6529 Fix #6516 Fix #6532 (fix flatterning textStyle, and emphasis without 'show' set in normal)