Update eslint plugins and configs #1005
Merged
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This PR includes following eslint plugins and configs changes:
Use eslint-config-airbnb-base
The eslint-config-airbnb targets React projects and Excel.JS doesn't use React.
The package suggests eslint-config-airbnb-base for non-React projects so that we should use it.
https://www.npmjs.com/package/eslint-config-airbnb
Add and enable eslint-plugin-node
Excel.JS has exported original source code since v3.0.0. This means new ECMAScript features which aren't supported by Node.JS cause errors.
The esling-plugin-node warns such features so that we can catch mistakes before CI fails.
https://www.npmjs.com/package/eslint-plugin-node
Use default parser (Espree) for ESLint
There are no reason to use Babel for ESLlint because Excel.JS has dropped Babel other than transpiling code.