source: node_modules/prismjs/components/prism-brightscript.js

Prism.languages.brightscript = {
        'comment': /(?:\brem|').*/i,
        'directive-statement': {
                pattern: /(^[\t ]*)#(?:const|else(?:[\t ]+if)?|end[\t ]+if|error|if).*/im,
                lookbehind: true,
                alias: 'property',
                inside: {
                        'error-message': {
                                pattern: /(^#error).+/,
                                lookbehind: true
                        },
                        'directive': {
                                pattern: /^#(?:const|else(?:[\t ]+if)?|end[\t ]+if|error|if)/,
                                alias: 'keyword'
                        },
                        'expression': {
                                pattern: /[\s\S]+/,
                                inside: null // see below
                        }
                }
        },
        'property': {
                pattern: /([\r\n{,][\t ]*)(?:(?!\d)\w+|"(?:[^"\r\n]|"")*"(?!"))(?=[ \t]*:)/,
                lookbehind: true,
                greedy: true
        },
        'string': {
                pattern: /"(?:[^"\r\n]|"")*"(?!")/,
                greedy: true
        },
        'class-name': {
                pattern: /(\bAs[\t ]+)\w+/i,
                lookbehind: true
        },
        'keyword': /\b(?:As|Dim|Each|Else|Elseif|End|Exit|For|Function|Goto|If|In|Print|Return|Step|Stop|Sub|Then|To|While)\b/i,
        'boolean': /\b(?:false|true)\b/i,
        'function': /\b(?!\d)\w+(?=[\t ]*\()/,
        'number': /(?:\b\d+(?:\.\d+)?(?:[ed][+-]\d+)?|&h[a-f\d]+)\b[%&!#]?/i,
        'operator': /--|\+\+|>>=?|<<=?|<>|[-+*/\\<>]=?|[:^=?]|\b(?:and|mod|not|or)\b/i,
        'punctuation': /[.,;()[\]{}]/,
        'constant': /\b(?:LINE_NUM)\b/i
};

Prism.languages.brightscript['directive-statement'].inside.expression.inside = Prism.languages.brightscript;