Minify causes syntax error

[MichaelXF]

Describe the bug:

Minify causes syntax error

Config and Small code sample

Config:

{
  target: "node",
  minify: true
}

Code:

var myObject = {
  "`": true,
  "^": true,
  "]": true,
  "[": true
}

Output:

var myObject = {
    `: !0,
    ^: !0,
    ]: !0,
    [: !0
};

js-confuser/src/util/compare.ts

Lines 48 to 58 in a045dc1

	export function isValidIdentifier(name: string): boolean {
	if (typeof name !== "string") {
	return false;
	}
	if (name.includes(".") || name.includes(" ")) {
	return false;
	}
	var x = name.match(/^[A-z$_][A-z0-9$_]*/);
	return x && x[0] == name;
	}

The regex includes char codes 65 to 122 which is incorrect. It should use A-Za-z instead.