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index.ts
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index.ts
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// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
/**
* @packageDocumentation
* @module nbformat
*/
// Notebook format interfaces
// https://nbformat.readthedocs.io/en/latest/format_description.html
// https://github.com/jupyter/nbformat/blob/master/nbformat/v4/nbformat.v4.schema.json
import { JSONExt, PartialJSONObject } from '@lumino/coreutils';
/**
* The earliest major version of the notebook format we support.
*/
export const MAJOR_VERSION: number = 4;
/**
* The earliest minor version of the notebook format we support.
*/
export const MINOR_VERSION: number = 4;
/**
* The kernelspec metadata.
*/
export interface IKernelspecMetadata extends PartialJSONObject {
name: string;
display_name: string;
}
/**
* The language info metadata
*/
export interface ILanguageInfoMetadata extends PartialJSONObject {
name: string;
codemirror_mode?: string | PartialJSONObject;
file_extension?: string;
mimetype?: string;
pygments_lexer?: string;
}
/**
* The default metadata for the notebook.
*/
export interface INotebookMetadata extends PartialJSONObject {
kernelspec?: IKernelspecMetadata;
language_info?: ILanguageInfoMetadata;
orig_nbformat?: number;
}
/**
* The notebook content.
*/
export interface INotebookContent extends PartialJSONObject {
metadata: INotebookMetadata;
nbformat_minor: number;
nbformat: number;
cells: ICell[];
}
/**
* A multiline string.
*/
export type MultilineString = string | string[];
/**
* A mime-type keyed dictionary of data.
*/
export interface IMimeBundle extends PartialJSONObject {
[key: string]: MultilineString | PartialJSONObject;
}
/**
* Media attachments (e.g. inline images).
*/
export interface IAttachments {
[key: string]: IMimeBundle | undefined;
}
/**
* The code cell's prompt number. Will be null if the cell has not been run.
*/
export type ExecutionCount = number | null;
/**
* Cell output metadata.
*/
export type OutputMetadata = PartialJSONObject;
/**
* Validate a mime type/value pair.
*
* @param type - The mimetype name.
*
* @param value - The value associated with the type.
*
* @returns Whether the type/value pair are valid.
*/
export function validateMimeValue(
type: string,
value: MultilineString | PartialJSONObject
): boolean {
// Check if "application/json" or "application/foo+json"
const jsonTest = /^application\/.+\+json$/;
const isJSONType = type === 'application/json' || jsonTest.test(type);
const isString = (x: any) => {
return Object.prototype.toString.call(x) === '[object String]';
};
// If it is an array, make sure if is not a JSON type and it is an
// array of strings.
if (Array.isArray(value)) {
if (isJSONType) {
return false;
}
let valid = true;
(value as string[]).forEach(v => {
if (!isString(v)) {
valid = false;
}
});
return valid;
}
// If it is a string, make sure we are not a JSON type.
if (isString(value)) {
return !isJSONType;
}
// It is not a string, make sure it is a JSON type.
if (!isJSONType) {
return false;
}
// It is a JSON type, make sure it is a valid JSON object.
return JSONExt.isObject(value);
}
/**
* A type which describes the type of cell.
*/
export type CellType = 'code' | 'markdown' | 'raw' | string;
/**
* The Jupyter metadata namespace.
*/
export interface IBaseCellJupyterMetadata extends PartialJSONObject {
/**
* Whether the source is hidden.
*/
source_hidden: boolean;
}
/**
* Cell-level metadata.
*/
export interface IBaseCellMetadata extends PartialJSONObject {
/**
* Whether the cell is trusted.
*
* #### Notes
* This is not strictly part of the nbformat spec, but it is added by
* the contents manager.
*
* See https://jupyter-server.readthedocs.io/en/latest/operators/security.html.
*/
trusted: boolean;
/**
* The cell's name. If present, must be a non-empty string.
*/
name: string;
/**
* The Jupyter metadata namespace
*/
jupyter: Partial<IBaseCellJupyterMetadata>;
/**
* The cell's tags. Tags must be unique, and must not contain commas.
*/
tags: string[];
}
/**
* The base cell interface.
*/
export interface IBaseCell extends PartialJSONObject {
/**
* String identifying the type of cell.
*/
cell_type: string;
/**
* Contents of the cell, represented as an array of lines.
*/
source: MultilineString;
/**
* Cell-level metadata.
*/
metadata: Partial<ICellMetadata>;
}
/**
* Metadata for the raw cell.
*/
export interface IRawCellMetadata extends IBaseCellMetadata {
/**
* Raw cell metadata format for nbconvert.
*/
format: string;
}
/**
* A raw cell.
*/
export interface IRawCell extends IBaseCell {
/**
* A string field representing the identifier of this particular cell.
*
* Notebook format 4.4 requires no id field, but format 4.5 requires an id
* field. We need to handle both cases, so we make id optional here.
*/
id?: string;
/**
* String identifying the type of cell.
*/
cell_type: 'raw';
/**
* Cell-level metadata.
*/
metadata: Partial<IRawCellMetadata>;
/**
* Cell attachments.
*/
attachments?: IAttachments;
}
/**
* A markdown cell.
*/
export interface IMarkdownCell extends IBaseCell {
/**
* A string field representing the identifier of this particular cell.
*
* Notebook format 4.4 requires no id field, but format 4.5 requires an id
* field. We need to handle both cases, so we make id optional here.
*/
id?: string;
/**
* String identifying the type of cell.
*/
cell_type: 'markdown';
/**
* Cell attachments.
*/
attachments?: IAttachments;
}
/**
* The Jupyter metadata namespace for code cells.
*/
export interface ICodeCellJupyterMetadata extends IBaseCellJupyterMetadata {
/**
* Whether the outputs are hidden. See https://github.com/jupyter/nbformat/issues/137.
*/
outputs_hidden: boolean;
}
/**
* Metadata for a code cell.
*/
export interface ICodeCellMetadata extends IBaseCellMetadata {
/**
* Whether the cell is collapsed/expanded.
*/
collapsed: boolean;
/**
* The Jupyter metadata namespace
*/
jupyter: Partial<ICodeCellJupyterMetadata>;
/**
* Whether the cell's output is scrolled, unscrolled, or autoscrolled.
*/
scrolled: boolean | 'auto';
}
/**
* A code cell.
*/
export interface ICodeCell extends IBaseCell {
/**
* A string field representing the identifier of this particular cell.
*
* Notebook format 4.4 requires no id field, but format 4.5 requires an id
* field. We need to handle both cases, so we make id optional here.
*/
id?: string;
/**
* String identifying the type of cell.
*/
cell_type: 'code';
/**
* Cell-level metadata.
*/
metadata: Partial<ICodeCellMetadata>;
/**
* Execution, display, or stream outputs.
*/
outputs: IOutput[];
/**
* The code cell's prompt number. Will be null if the cell has not been run.
*/
execution_count: ExecutionCount;
}
/**
* An unrecognized cell.
*/
export interface IUnrecognizedCell extends IBaseCell {}
/**
* A cell union type.
*/
export type ICell = IRawCell | IMarkdownCell | ICodeCell | IUnrecognizedCell;
/**
* Test whether a cell is a raw cell.
*/
export function isRaw(cell: ICell): cell is IRawCell {
return cell.cell_type === 'raw';
}
/**
* Test whether a cell is a markdown cell.
*/
export function isMarkdown(cell: ICell): cell is IMarkdownCell {
return cell.cell_type === 'markdown';
}
/**
* Test whether a cell is a code cell.
*/
export function isCode(cell: ICell): cell is ICodeCell {
return cell.cell_type === 'code';
}
/**
* A union metadata type.
*/
export type ICellMetadata =
| IBaseCellMetadata
| IRawCellMetadata
| ICodeCellMetadata;
/**
* The valid output types.
*/
export type OutputType =
| 'execute_result'
| 'display_data'
| 'stream'
| 'error'
| 'update_display_data';
/**
* The base output type.
*/
export interface IBaseOutput extends PartialJSONObject {
/**
* Type of cell output.
*/
output_type: string;
}
/**
* Result of executing a code cell.
*/
export interface IExecuteResult extends IBaseOutput {
/**
* Type of cell output.
*/
output_type: 'execute_result';
/**
* A result's prompt number.
*/
execution_count: ExecutionCount;
/**
* A mime-type keyed dictionary of data.
*/
data: IMimeBundle;
/**
* Cell output metadata.
*/
metadata: OutputMetadata;
}
/**
* Data displayed as a result of code cell execution.
*/
export interface IDisplayData extends IBaseOutput {
/**
* Type of cell output.
*/
output_type: 'display_data';
/**
* A mime-type keyed dictionary of data.
*/
data: IMimeBundle;
/**
* Cell output metadata.
*/
metadata: OutputMetadata;
}
/**
* Data displayed as an update to existing display data.
*/
export interface IDisplayUpdate extends IBaseOutput {
/**
* Type of cell output.
*/
output_type: 'update_display_data';
/**
* A mime-type keyed dictionary of data.
*/
data: IMimeBundle;
/**
* Cell output metadata.
*/
metadata: OutputMetadata;
}
/**
* Stream output from a code cell.
*/
export interface IStream extends IBaseOutput {
/**
* Type of cell output.
*/
output_type: 'stream';
/**
* The name of the stream.
*/
name: StreamType;
/**
* The stream's text output.
*/
text: MultilineString;
}
/**
* An alias for a stream type.
*/
export type StreamType = 'stdout' | 'stderr';
/**
* Output of an error that occurred during code cell execution.
*/
export interface IError extends IBaseOutput {
/**
* Type of cell output.
*/
output_type: 'error';
/**
* The name of the error.
*/
ename: string;
/**
* The value, or message, of the error.
*/
evalue: string;
/**
* The error's traceback.
*/
traceback: string[];
}
/**
* Unrecognized output.
*/
export interface IUnrecognizedOutput extends IBaseOutput {}
/**
* Test whether an output is an execute result.
*/
export function isExecuteResult(output: IOutput): output is IExecuteResult {
return output.output_type === 'execute_result';
}
/**
* Test whether an output is from display data.
*/
export function isDisplayData(output: IOutput): output is IDisplayData {
return output.output_type === 'display_data';
}
/**
* Test whether an output is from updated display data.
*/
export function isDisplayUpdate(output: IOutput): output is IDisplayUpdate {
return output.output_type === 'update_display_data';
}
/**
* Test whether an output is from a stream.
*/
export function isStream(output: IOutput): output is IStream {
return output.output_type === 'stream';
}
/**
* Test whether an output is an error.
*/
export function isError(output: IOutput): output is IError {
return output.output_type === 'error';
}
/**
* An output union type.
*/
export type IOutput =
| IUnrecognizedOutput
| IExecuteResult
| IDisplayData
| IStream
| IError;