monaco-editor/website/playground/new-samples/extending-language-services/symbols-provider-example/sample.js

monaco.languages.registerDocumentSymbolProvider('json', {
    provideDocumentSymbols: function (model, token) {
        return [
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'File',
                kind: 0,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Module',
                kind: 1,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Namespace',
                kind: 2,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Package',
                kind: 3,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Class',
                kind: 4,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Method',
                kind: 5,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Property',
                kind: 6,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Field',
                kind: 7,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Constructor',
                kind: 8,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Enum',
                kind: 9,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Interface',
                kind: 10,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Function',
                kind: 11,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Variable',
                kind: 12,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Constant',
                kind: 13,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'String',
                kind: 14,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Number',
                kind: 15,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Boolean',
                kind: 16,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Array',
                kind: 17,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Object',
                kind: 18,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Key',
                kind: 19,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Null',
                kind: 20,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'EnumMember',
                kind: 21,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Struct',
                kind: 22,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Event',
                kind: 23,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'Operator',
                kind: 24,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
            {
                range: {
                    startLineNumber: 1,
                    startColumn: 1,
                    endLineNumber: 2,
                    endColumn: 1
                },
                name: 'TypeParameter',
                kind: 25,
                detail: "",
                tags: [],
                selectionRange: {
                  startLineNumber: 1,
                  startColumn: 1,
                  endLineNumber: 2,
                  endColumn: 1
                }
            },
        ];
    }
});

// press Ctrl+Shift+O to show the symbols in the editor
monaco.editor.create(document.getElementById("container"), {
    value: "{\n\t\"dependencies\": {\n\t\t\n\t}\n}\n",
    language: "json"
});