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

Prism.languages.scala = Prism.languages.extend('java', {
        'triple-quoted-string': {
                pattern: /"""[\s\S]*?"""/,
                greedy: true,
                alias: 'string'
        },
        'string': {
                pattern: /("|')(?:\\.|(?!\1)[^\\\r\n])*\1/,
                greedy: true
        },
        'keyword': /<-|=>|\b(?:abstract|case|catch|class|def|derives|do|else|enum|extends|extension|final|finally|for|forSome|given|if|implicit|import|infix|inline|lazy|match|new|null|object|opaque|open|override|package|private|protected|return|sealed|self|super|this|throw|trait|transparent|try|type|using|val|var|while|with|yield)\b/,
        'number': /\b0x(?:[\da-f]*\.)?[\da-f]+|(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:e\d+)?[dfl]?/i,
        'builtin': /\b(?:Any|AnyRef|AnyVal|Boolean|Byte|Char|Double|Float|Int|Long|Nothing|Short|String|Unit)\b/,
        'symbol': /'[^\d\s\\]\w*/
});

Prism.languages.insertBefore('scala', 'triple-quoted-string', {
        'string-interpolation': {
                pattern: /\b[a-z]\w*(?:"""(?:[^$]|\$(?:[^{]|\{(?:[^{}]|\{[^{}]*\})*\}))*?"""|"(?:[^$"\r\n]|\$(?:[^{]|\{(?:[^{}]|\{[^{}]*\})*\}))*")/i,
                greedy: true,
                inside: {
                        'id': {
                                pattern: /^\w+/,
                                greedy: true,
                                alias: 'function'
                        },
                        'escape': {
                                pattern: /\\\$"|\$[$"]/,
                                greedy: true,
                                alias: 'symbol'
                        },
                        'interpolation': {
                                pattern: /\$(?:\w+|\{(?:[^{}]|\{[^{}]*\})*\})/,
                                greedy: true,
                                inside: {
                                        'punctuation': /^\$\{?|\}$/,
                                        'expression': {
                                                pattern: /[\s\S]+/,
                                                inside: Prism.languages.scala
                                        }
                                }
                        },
                        'string': /[\s\S]+/
                }
        }
});

delete Prism.languages.scala['class-name'];
delete Prism.languages.scala['function'];
delete Prism.languages.scala['constant'];