bold italic font in vs code code example

Example 1: make font cursive vs code

{   //You need to install FireCodeiScript font first
	//https://github.com/kencrocken/FiraCodeiScript download this and just intstall the fonts one by one
    //put the below code in vs code settings.json file after installing font and voila 
    
    "editor.fontFamily": "Fira Code iScript, Menlo, Monaco, 'Courier New', monospace",
    "editor.fontLigatures": true,
    "editor.tokenColorCustomizations": {
        "textMateRules": [
            {
                "name": "comment",
                "scope": [
                    "comment"
                ],
                "settings": {
                    "fontStyle": "italic"
                }
            },
            {
                "name": "Keyword Storage",
                "scope": [
                    "keyword",
                    "keyword.control",
                    "storage"
                ],
                "settings": {
                    "fontStyle": "italic"
                }
            },
            {
                "name": "Entity",
                "scope": [
                    "entity.name.method",
                    "entity.name.type.class",
                    "entity.other.attribute-name"
                ],
                "settings": {
                    "fontStyle": "italic"
                }
            },
            {
                "name": "Variable",
                "scope": [
                    "variable.language"
                ],
                "settings": {
                    "fontStyle": "italic"
                }
            }
        ]
    }
}

Example 2: vscode change to italic font on word

"editor.tokenColorCustomizations": {
    "textMateRules": [{
            "name": "Comment",
            "scope": [
                "comment",
                "punctuation.definition.comment"
            ],
            "settings": {
                "fontStyle": "italic",
                //"foreground": "#4A4A4A"
            }
        },

        {
            "name": "Keyword, Storage",
            "scope": [
                "Keyword",
                "Storage"
            ],
            "settings": {
                "fontStyle": "italic"
            }
        },

        {
            "name": "Keyword Control",
            "scope": [
                "keyword.control"
            ],
            "settings": {
                "fontStyle": "italic"
            }
        },

        {
            "scope": "entity.other.attribute-name",
            "settings": {
                "fontStyle": "italic",
                //"foreground": "#78dce8"
            }
        },


        {
            "name": "entity.name.method.js",
            "scope": [
                "entity.name.method.js"
            ],
            "settings": {
                "fontStyle": "italic",
                //"foreground": "#82AAFF"
            }
        },


        {
            "name": "Language methods",
            "scope": [
                "variable.language"
            ],
            "settings": {
                "fontStyle": "italic",
                //"foreground": "#FF5370"
            }
        },


        {
            "name": "HTML Attributes",
            "scope": [
                "text.html.basic entity.other.attribute-name.html",
                "text.html.basic entity.other.attribute-name"
            ],
            "settings": {
                "fontStyle": "italic",
                //"foreground": "#FFCB6B"
            }
        },


        {
            "name": "Decorators",
            "scope": [
                "tag.decorator.js entity.name.tag.js",
                "tag.decorator.js punctuation.definition.tag.js"
            ],
            "settings": {
                "fontStyle": "italic",
                //"foreground": "#82AAFF"
            }
        },


        {
            "name": "ES7 Bind Operator",
            "scope": [
                "source.js constant.other.object.key.js string.unquoted.label.js"
            ],
            "settings": {
                "fontStyle": "italic",
                //"foreground": "#FF5370"
            }
        },

        {
            "name": "Markup - Italic",
            "scope": [
                "markup.italic"
            ],
            "settings": {
                "fontStyle": "italic",
                //"foreground": "#f07178"
            }
        },


        {
            "name": "Markup - Bold-Italic",
            "scope": [
                "markup.bold markup.italic",
                "markup.italic markup.bold",
                "markup.quote markup.bold",
                "markup.bold markup.italic string",
                "markup.italic markup.bold string",
                "markup.quote markup.bold string"
            ],
            "settings": {
                "fontStyle": "bold",
                //"foreground": "#f07178"
            }
        },

        {
            "name": "Markup - Quote",
            "scope": [
                "markup.quote"
            ],
            "settings": {
                "fontStyle": "italic",
                //"foreground": ""
            }
        },
        {
            "scope": "variable.other",
            "settings": {
                "foreground": "#82fbff"
            }
        },
        {
            "scope": "entity.name.function",
            "settings": {
                "foreground": "#dfd9a8"
            }
        },
        {
            "scope": "support.function",
            "settings": {
                "fontStyle": "italic",
                "foreground": "#dfd9a8"
            }
        },
        {
            "scope": "string",
            "settings": {
                "foreground": "#CE9178"
            }
        },
    ]
},