This is what ESLint will tell you, you got errors but you may have no clue what they mean:
5922:39 error 'x:' is defined but never used no-unused-labels
5922:39 error This line has 2 statements. Maximum allowed is 1 max-statements-per-line
5922:42 error Missing semicolon semi
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Good linters will tell.
This is what ESLint will tell you, you got errors but you may have no clue what they mean: