Edit: javascript.nanorc
## Syntax highlighting for Javascript. syntax javascript "\.js$" comment "//" # Declarational stuff. color green "\<(async|class|const|extends|function|let|this|typeof|var|void)\>" # Flow control and special keywords. color brightyellow "\<(do|while|if|else|switch|case|default|for|each|in|of|with)\>" color brightyellow "\<(await|export|import|throw|try|catch|finally|new|delete)\>" # "Exit" points. color magenta "\<(break|continue|return|yield)\>" # Octal/decimal and hexadecimal numbers. color cyan "\<[0-9]+\>" "\<0x[0-9A-Fa-f]+\>" # Strings. color brightmagenta ""(\\.|[^"])*"" "'(\\.|[^'])*'" "`(\\.|[^`])*`" # Comments. color brightblue "(^|[[:space:]])//.*" color brightblue start="/\*" end="\*/" # Trailing whitespace. color ,green "[[:space:]]+$"
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