extensions js mjs cjs jsx
names javascript js node jsx
line_comment //
block_comment /* */
strings " \
keywords async await break case catch class const continue debugger default delete do else export extends finally for from function get if import in instanceof let new of return set static super switch this throw try typeof var void while with yield
types Array Boolean Date Error Function JSON Map Math Number Object Promise RegExp Set String Symbol WeakMap WeakSet null undefined true false NaN Infinity