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

(function (Prism) {
        Prism.languages.flow = Prism.languages.extend('javascript', {});

        Prism.languages.insertBefore('flow', 'keyword', {
                'type': [
                        {
                                pattern: /\b(?:[Bb]oolean|Function|[Nn]umber|[Ss]tring|[Ss]ymbol|any|mixed|null|void)\b/,
                                alias: 'class-name'
                        }
                ]
        });
        Prism.languages.flow['function-variable'].pattern = /(?!\s)[_$a-z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*=\s*(?:function\b|(?:\([^()]*\)(?:\s*:\s*\w+)?|(?!\s)[_$a-z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)\s*=>))/i;
        delete Prism.languages.flow['parameter'];

        Prism.languages.insertBefore('flow', 'operator', {
                'flow-punctuation': {
                        pattern: /\{\||\|\}/,
                        alias: 'punctuation'
                }
        });

        if (!Array.isArray(Prism.languages.flow.keyword)) {
                Prism.languages.flow.keyword = [Prism.languages.flow.keyword];
        }
        Prism.languages.flow.keyword.unshift(
                {
                        pattern: /(^|[^$]\b)(?:Class|declare|opaque|type)\b(?!\$)/,
                        lookbehind: true
                },
                {
                        pattern: /(^|[^$]\B)\$(?:Diff|Enum|Exact|Keys|ObjMap|PropertyType|Record|Shape|Subtype|Supertype|await)\b(?!\$)/,
                        lookbehind: true
                }
        );
}(Prism));