// Only for Dygraph TypeScript definitions

declare module 'src/external/dygraph' {
  export type DygraphData = DygraphValue[][]

  type Data = string | DygraphData | google.visualization.DataTable

  export type DygraphValue = string | number | Date | null

  interface DygraphAxis {
    bounds: [number, number]
    label: string
    prefix: string
    suffix: string
    base: string
    scale: string
  }

  export interface DygraphSeries {
    [x: string]: {
      axis: string
    }
  }

  interface PerSeriesOptions {
    /**
     * Set to either 'y1' or 'y2' to assign a series to a y-axis (primary or secondary). Must be
     * set per-series.
     */
    axis?: 'y1' | 'y2'

    /**
     * A per-series color definition. Used in conjunction with, and overrides, the colors option.
     */
    color?: string

    /**
     * Draw a small dot at each point, in addition to a line going through the point. This makes
     * the individual data points easier to see, but can increase visual clutter in the chart.
     * The small dot can be replaced with a custom rendering by supplying a <a
     * href='#drawPointCallback'>drawPointCallback</a>.
     */
    drawPoints?: boolean

    /**
     * Error bars (or custom bars) for each series are drawn in the same color as the series, but
     * with partial transparency. This sets the transparency. A value of 0.0 means that the error
     * bars will not be drawn, whereas a value of 1.0 means that the error bars will be as dark
     * as the line for the series itself. This can be used to produce chart lines whose thickness
     * varies at each point.
     */
    fillAlpha?: number

    /**
     * Should the area underneath the graph be filled? This option is not compatible with error
     * bars. This may be set on a <a href='per-axis.html'>per-series</a> basis.
     */
    fillGraph?: boolean

    /**
     * The size in pixels of the dot drawn over highlighted points.
     */
    highlightCircleSize?: number

    /**
     * The size of the dot to draw on each point in pixels (see drawPoints). A dot is always
     * drawn when a point is "isolated", i.e. there is a missing point on either side of it. This
     * also controls the size of those dots.
     */
    pointSize?: number

    /**
     * Mark this series for inclusion in the range selector. The mini plot curve will be an
     * average of all such series. If this is not specified for any series, the default behavior
     * is to average all the series. Setting it for one series will result in that series being
     * charted alone in the range selector.
     */
    showInRangeSelector?: boolean

    /**
     * When set, display the graph as a step plot instead of a line plot. This option may either
     * be set for the whole graph or for single series.
     */
    stepPlot?: boolean

    /**
     * Draw a border around graph lines to make crossing lines more easily distinguishable.
     * Useful for graphs with many lines.
     */
    strokeBorderWidth?: number

    /**
     * Color for the line border used if strokeBorderWidth is set.
     */
    strokeBorderColor?: string

    /**
     * A custom pattern array where the even index is a draw and odd is a space in pixels. If
     * null then it draws a solid line. The array should have a even length as any odd lengthed
     * array could be expressed as a smaller even length array. This is used to create dashed
     * lines.
     */
    strokePattern?: number[]

    /**
     * The width of the lines connecting data points. This can be used to increase the contrast
     * or some graphs.
     */
    strokeWidth?: number
  }

  interface PerAxisOptions {
    /**
     * Color for x- and y-axis labels. This is a CSS color string.
     */
    axisLabelColor?: string

    /**
     * Size of the font (in pixels) to use in the axis labels, both x- and y-axis.
     */
    axisLabelFontSize?: number

    /**
     * Function to call to format the tick values that appear along an axis. This is usually set
     * on a <a href='per-axis.html'>per-axis</a> basis.
     */
    axisLabelFormatter?: (
      v: number | Date,
      granularity: number,
      opts: (name: string) => any,
      dygraph: Dygraph
    ) => any

    /**
     * Width (in pixels) of the containing divs for x- and y-axis labels. For the y-axis, this
     * also controls the width of the y-axis. Note that for the x-axis, this is independent from
     * pixelsPerLabel, which controls the spacing between labels.
     */
    axisLabelWidth?: number

    /**
     * Color of the x- and y-axis lines. Accepts any value which the HTML canvas strokeStyle
     * attribute understands, e.g. 'black' or 'rgb(0, 100, 255)'.
     */
    axisLineColor?: string

    /**
     * Thickness (in pixels) of the x- and y-axis lines.
     */
    axisLineWidth?: number

    /**
     * The size of the line to display next to each tick mark on x- or y-axes.
     */
    axisTickSize?: number

    /**
     * Whether to draw the specified axis. This may be set on a per-axis basis to define the
     * visibility of each axis separately. Setting this to false also prevents axis ticks from
     * being drawn and reclaims the space for the chart grid/lines.
     */
    drawAxis?: boolean

    /**
     * The color of the gridlines. This may be set on a per-axis basis to define each axis' grid
     * separately.
     */
    gridLineColor?: string

    /**
     * A custom pattern array where the even index is a draw and odd is a space in pixels. If
     * null then it draws a solid line. The array should have a even length as any odd lengthed
     * array could be expressed as a smaller even length array. This is used to create dashed
     * gridlines.
     */
    gridLinePattern?: number[]

    /**
     * Thickness (in pixels) of the gridlines drawn under the chart. The vertical/horizontal
     * gridlines can be turned off entirely by using the drawXGrid and drawYGrid options. This
     * may be set on a per-axis basis to define each axis' grid separately.
     */
    gridLineWidth?: number

    /**
     * Only valid for y and y2, has no effect on x: This option defines whether the y axes should
     * align their ticks or if they should be independent. Possible combinations: 1.) y=true,
     * y2=false (default): y is the primary axis and the y2 ticks are aligned to the the ones of
     * y. (only 1 grid) 2.) y=false, y2=true: y2 is the primary axis and the y ticks are aligned
     * to the the ones of y2. (only 1 grid) 3.) y=true, y2=true: Both axis are independent and
     * have their own ticks. (2 grids) 4.) y=false, y2=false: Invalid configuration causes an
     * error.
     */
    independentTicks?: boolean

    /**
     * When set for the y-axis or x-axis, the graph shows that axis in log scale. Any values less
     * than or equal to zero are not displayed. Showing log scale with ranges that go below zero
     * will result in an unviewable graph.
     *
     * Not compatible with showZero. connectSeparatedPoints is ignored. This is ignored for
     * date-based x-axes.
     */
    logscale?: boolean

    /**
     * When displaying numbers in normal (not scientific) mode, large numbers will be displayed
     * with many trailing zeros (e.g. 100000000 instead of 1e9). This can lead to unwieldy y-axis
     * labels. If there are more than <code>maxNumberWidth</code> digits to the left of the
     * decimal in a number, dygraphs will switch to scientific notation, even when not operating
     * in scientific mode. If you'd like to see all those digits, set this to something large,
     * like 20 or 30.
     */
    maxNumberWidth?: number

    /**
     * Number of pixels to require between each x- and y-label. Larger values will yield a
     * sparser axis with fewer ticks. This is set on a <a href='per-axis.html'>per-axis</a>
     * basis.
     */
    pixelsPerLabel?: number

    /**
     * By default, dygraphs displays numbers with a fixed number of digits after the decimal
     * point. If you'd prefer to have a fixed number of significant figures, set this option to
     * that number of sig figs. A value of 2, for instance, would cause 1 to be display as 1.0
     * and 1234 to be displayed as 1.23e+3.
     */
    sigFigs?: number

    /**
     * This lets you specify an arbitrary function to generate tick marks on an axis. The tick
     * marks are an array of (value, label) pairs. The built-in functions go to great lengths to
     * choose good tick marks so, if you set this option, you'll most likely want to call one of
     * them and modify the result. See dygraph-tickers.js for an extensive discussion. This is
     * set on a <a href='per-axis.html'>per-axis</a> basis.
     */
    ticker?: (
      min: number,
      max: number,
      pixels: number,
      opts: (name: string) => any,
      dygraph: Dygraph,
      vals: number[]
    ) => Array<{v: number; label: string}>

    /**
     * Function to provide a custom display format for the values displayed on mouseover. This
     * does not affect the values that appear on tick marks next to the axes. To format those,
     * see axisLabelFormatter. This is usually set on a <a href='per-axis.html'>per-axis</a>
     * basis.
     */
    valueFormatter?: (
      v: number,
      opts: (name: string) => any,
      seriesName: string,
      dygraph: Dygraph,
      row: number,
      col: number
    ) => any

    /**
     * Explicitly set the vertical range of the graph to [low, high]. This may be set on a
     * per-axis basis to define each y-axis separately. If either limit is unspecified, it will
     * be calculated automatically (e.g. [null, 30] to automatically calculate just the lower
     * bound)
     */
    valueRange?: number[]

    /**
     * Whether to display gridlines in the chart. This may be set on a per-axis basis to define
     * the visibility of each axis' grid separately.
     */
    drawGrid?: boolean

    /**
     * Show K/M/B for thousands/millions/billions on y-axis.
     */
    labelsKMB?: boolean

    /**
     * Show k/M/G for kilo/Mega/Giga on y-axis. This is different than <code>labelsKMB</code> in
     * that it uses base 2, not 10.
     */
    labelsKMG2?: boolean
  }

  export interface SeriesLegendData {
    /**
     * Assigned or generated series color
     */
    color: string
    /**
     * Series line dash
     */
    dashHTML: string
    /**
     * Whether currently focused or not
     */
    isHighlighted: boolean
    /**
     * Whether the series line is inside the selected/zoomed region
     */
    isVisible: boolean
    /**
     * Assigned label to this series
     */
    label: string
    /**
     * Generated label html for this series
     */
    labelHTML: string
    /**
     * y value of this series
     */
    y: number
    /**
     * Generated html for y value
     */
    yHTML: string
  }

  interface LegendData {
    /**
     * x value of highlighted points
     */
    x: number
    /**
     * Generated HTML for x value
     */
    xHTML: string
    /**
     * Series data for the highlighted points
     */
    series: SeriesLegendData[]
    /**
     * Dygraph object for this graph
     */
    dygraph: Dygraph
  }

  interface SeriesProperties {
    name: string
    column: number
    visible: boolean
    color: string
    axis: number
  }

  interface Area {
    x: number
    y: number
    w: number
    h: number
  }

  /**
   * Point structure.
   *
   * xval_* and yval_* are the original unscaled data values,
   * while x_* and y_* are scaled to the range (0.0-1.0) for plotting.
   * yval_stacked is the cumulative Y value used for stacking graphs,
   * and bottom/top/minus/plus are used for error bar graphs.
   */
  interface Point {
    idx: number
    name: string
    x?: number
    xval?: number
    y_bottom?: number
    y?: number
    y_stacked?: number
    y_top?: number
    yval_minus?: number
    yval?: number
    yval_plus?: number
    yval_stacked?: number
    annotation?: dygraphs.Annotation
  }

  interface Annotation {
    /** The name of the series to which the annotated point belongs. */
    series: string

    /**
     * The x value of the point. This should be the same as the value
     * you specified in your CSV file, e.g. "2010-09-13".
     * You must set either x or xval.
     */
    x?: number | string

    /**
     * numeric value of the point, or millis since epoch.
     */
    xval?: number

    /*	Text that will appear on the annotation's flag. */
    shortText?: string

    /** A longer description of the annotation which will appear when the user hovers over it. */
    text?: string

    /**
     * Specify in place of shortText to mark the annotation with an image rather than text.
     * If you specify this, you must specify width and height.
     */
    icon?: string

    /*	Width (in pixels) of the annotation flag or icon. */
    width?: number

    /** Height (in pixels) of the annotation flag or icon. */
    height?: number

    /*	CSS class to use for styling the annotation. */
    cssClass?: string

    /*	Height of the tick mark (in pixels) connecting the point to its flag or icon. */
    tickHeight?: number

    /*	If true, attach annotations to the x-axis, rather than to actual points. */
    attachAtBottom?: boolean

    div?: HTMLDivElement

    /** This function is called whenever the user clicks on this annotation. */
    clickHandler?: (
      annotation: dygraphs.Annotation,
      point: Point,
      dygraph: Dygraph,
      event: MouseEvent<Element>
    ) => any

    /** This function is called whenever the user mouses over this annotation. */
    mouseOverHandler?: (
      annotation: dygraphs.Annotation,
      point: Point,
      dygraph: Dygraph,
      event: MouseEvent<Element>
    ) => any

    /** This function is called whenever the user mouses out of this annotation. */
    mouseOutHandler?: (
      annotation: dygraphs.Annotation,
      point: Point,
      dygraph: Dygraph,
      event: MouseEvent<Element>
    ) => any

    /** this function is called whenever the user double-clicks on this annotation. */
    dblClickHandler?: (
      annotation: dygraphs.Annotation,
      point: Point,
      dygraph: Dygraph,
      event: MouseEvent<Element>
    ) => any
  }

  type Axis = 'x' | 'y' | 'y2'

  declare class DygraphClass {
    // Tick granularities (passed to ticker).
    public static SECONDLY: number
    public static TWO_SECONDLY: number
    public static FIVE_SECONDLY: number
    public static TEN_SECONDLY: number
    public static THIRTY_SECONDLY: number
    public static MINUTELY: number
    public static TWO_MINUTELY: number
    public static FIVE_MINUTELY: number
    public static TEN_MINUTELY: number
    public static THIRTY_MINUTELY: number
    public static HOURLY: number
    public static TWO_HOURLY: number
    public static SIX_HOURLY: number
    public static DAILY: number
    public static TWO_DAILY: number
    public static WEEKLY: number
    public static MONTHLY: number
    public static QUARTERLY: number
    public static BIANNUAL: number
    public static ANNUAL: number
    public static DECADAL: number
    public static CENTENNIAL: number
    public static NUM_GRANULARITIES: number

    public static defaultInteractionModel: any

    public static DOTTED_LINE: number[]
    public static DASHED_LINE: number[]
    public static DOT_DASH_LINE: number[]

    public static Plotters: {
      errorPlotter: any
      linePlotter: any
      fillPlotter: any
    }

    // tslint:disable-next-line:variable-name
    public width_: number
    public graphDiv: HTMLElement

    constructor(
      container: HTMLElement | string,
      data: DygraphData | (() => DygraphData),
      options?: Options
    )

    /**
     * Returns the zoomed status of the chart for one or both axes.
     *
     * Axis is an optional parameter. Can be set to 'x' or 'y'.
     *
     * The zoomed status for an axis is set whenever a user zooms using the mouse
     * or when the dateWindow or valueRange are updated (unless the
     * isZoomedIgnoreProgrammaticZoom option is also specified).
     */
    public isZoomed(axis?: 'x' | 'y'): boolean

    public predraw_(): () => void

    public resizeElements_(): () => void

    /**
     * Returns information about the Dygraph object, including its containing ID.
     */
    public toString(): string

    /**
     * Returns the current value for an option, as set in the constructor or via
     * updateOptions. You may pass in an (optional) series name to get per-series
     * values for the option.
     *
     * All values returned by this method should be considered immutable. If you
     * modify them, there is no guarantee that the changes will be honored or that
     * dygraphs will remain in a consistent state. If you want to modify an option,
     * use updateOptions() instead.
     *
     * @param {string} name The name of the option (e.g. 'strokeWidth')
     * @param {string=} opt_seriesName Series name to get per-series values.
     * @return {*} The value of the option.
     */
    public getOption(name: string, seriesName?: string): any

    /**
     * Get the value of an option on a per-axis basis.
     */
    public getOptionForAxis(name: string, axis: dygraphs.Axis): any

    /**
     * Returns the current rolling period, as set by the user or an option.
     */
    public rollPeriod(): number

    /**
     * Returns the currently-visible x-range. This can be affected by zooming,
     * panning or a call to updateOptions.
     * Returns a two-element array: [left, right].
     * If the Dygraph has dates on the x-axis, these will be millis since epoch.
     */
    public xAxisRange(): [number, number]

    /**
     * Returns the lower- and upper-bound x-axis values of the data set.
     */
    public xAxisExtremes(): [number, number]

    /**
     * Returns the currently-visible y-range for an axis. This can be affected by
     * zooming, panning or a call to updateOptions. Axis indices are zero-based. If
     * called with no arguments, returns the range of the first axis.
     * Returns a two-element array: [bottom, top].
     */
    public yAxisRange(idx?: number): [number, number]

    /**
     * Returns the currently-visible y-ranges for each axis. This can be affected by
     * zooming, panning, calls to updateOptions, etc.
     * Returns an array of [bottom, top] pairs, one for each y-axis.
     */
    public yAxisRanges(): Array<[number, number]>

    /**
     * Convert from data coordinates to canvas/div X/Y coordinates.
     * If specified, do this conversion for the coordinate system of a particular
     * axis. Uses the first axis by default.
     * Returns a two-element array: [X, Y]
     *
     * Note: use toDomXCoord instead of toDomCoords(x, null) and use toDomYCoord
     * instead of toDomCoords(null, y, axis).
     */
    public toDomCoords(x: number, y: number, axis?: number): [number, number]

    /**
     * Convert from data x coordinates to canvas/div X coordinate.
     * If specified, do this conversion for the coordinate system of a particular
     * axis.
     * Returns a single value or null if x is null.
     */
    public toDomXCoord(x: number): number

    /**
     * Convert from data y coordinates to canvas/div Y coordinate and optional
     * axis. Uses the first axis by default.
     *
     * returns a single value or null if y is null.
     */
    public toDomYCoord(y: number, axis?: number): number

    /**
     * Convert from canvas/div coords to data coordinates.
     * If specified, do this conversion for the coordinate system of a particular
     * axis. Uses the first axis by default.
     * Returns a two-element array: [X, Y].
     *
     * Note: use toDataXCoord instead of toDataCoords(x, null) and use toDataYCoord
     * instead of toDataCoords(null, y, axis).
     */
    public toDataCoords(x: number, y: number, axis?: number): [number, number]

    /**
     * Convert from canvas/div x coordinate to data coordinate.
     *
     * If x is null, this returns null.
     */
    public toDataXCoord(x: number): number

    /**
     * Convert from canvas/div y coord to value.
     *
     * If y is null, this returns null.
     * if axis is null, this uses the first axis.
     */
    public toDataYCoord(y: number, axis?: number): number

    /**
     * Converts a y for an axis to a percentage from the top to the
     * bottom of the drawing area.
     *
     * If the coordinate represents a value visible on the canvas, then
     * the value will be between 0 and 1, where 0 is the top of the canvas.
     * However, this method will return values outside the range, as
     * values can fall outside the canvas.
     *
     * If y is null, this returns null.
     * if axis is null, this uses the first axis.
     *
     * @param {number} y The data y-coordinate.
     * @param {number} [axis] The axis number on which the data coordinate lives.
     * @return {number} A fraction in [0, 1] where 0 = the top edge.
     */
    public toPercentYCoord(y: number, axis?: number): number

    /**
     * Converts an x value to a percentage from the left to the right of
     * the drawing area.
     *
     * If the coordinate represents a value visible on the canvas, then
     * the value will be between 0 and 1, where 0 is the left of the canvas.
     * However, this method will return values outside the range, as
     * values can fall outside the canvas.
     *
     * If x is null, this returns null.
     * @param {number} x The data x-coordinate.
     * @return {number} A fraction in [0, 1] where 0 = the left edge.
     */
    public toPercentXCoord(x: number): number

    /**
     * Returns the number of columns (including the independent variable).
     */
    public numColumns(): number

    /**
     * Returns the number of rows (excluding any header/label row).
     */
    public numRows(): number

    /**
     * Returns the value in the given row and column. If the row and column exceed
     * the bounds on the data, returns null. Also returns null if the value is
     * missing.
     * @param {number} row The row number of the data (0-based). Row 0 is the
     *         first row of data, not a header row.
     * @param {number} col The column number of the data (0-based)
     * @return {number} The value in the specified cell or null if the row/col
     *         were out of range.
     */
    public getValue(row: number, col: number): number

    /**
     * Detach DOM elements in the dygraph and null out all data references.
     * Calling this when you're done with a dygraph can dramatically reduce memory
     * usage. See, e.g., the tests/perf.html example.
     */
    public destroy(): void

    /**
     * Return the list of colors. This is either the list of colors passed in the
     * attributes or the autogenerated list of rgb(r,g,b) strings.
     * This does not return colors for invisible series.
     * @return {Array.<string>} The list of colors.
     */
    public getColors(): string[]

    /**
     * Returns a few attributes of a series, i.e. its color, its visibility, which
     * axis it's assigned to, and its column in the original data.
     * Returns null if the series does not exist.
     * Otherwise, returns an object with column, visibility, color and axis properties.
     * The "axis" property will be set to 1 for y1 and 2 for y2.
     * The "column" property can be fed back into getValue(row, column) to get
     * values for this series.
     */
    public getPropertiesForSeries(seriesName: string): dygraphs.SeriesProperties

    /**
     * Reset the zoom to the original view coordinates. This is the same as
     * double-clicking on the graph.
     */
    public resetZoom(): void

    /**
     * Get the current graph's area object.
     */
    public getArea(): dygraphs.Area

    /**
     * Convert a mouse event to DOM coordinates relative to the graph origin.
     *
     * Returns a two-element array: [X, Y].
     */
    public eventToDomCoords(event: MouseEvent<Element>): [number, number]

    /**
     * Manually set the selected points and display information about them in the
     * legend. The selection can be cleared using clearSelection() and queried
     * using getSelection().
     * @param {number} row Row number that should be highlighted (i.e. appear with
     * hover dots on the chart).
     * @param {seriesName} optional series name to highlight that series with the
     * the highlightSeriesOpts setting.
     * @param { locked } optional If true, keep seriesName selected when mousing
     * over the graph, disabling closest-series highlighting. Call clearSelection()
     * to unlock it.
     */
    public setSelection(
      row: number | boolean,
      seriesName?: string,
      locked?: boolean
    ): void

    /**
     * Clears the current selection (i.e. points that were highlighted by moving
     * the mouse over the chart).
     */
    public clearSelection(): void

    /**
     * Returns the number of the currently selected row. To get data for this row,
     * you can use the getValue method.
     * @return {number} row number, or -1 if nothing is selected
     */
    public getSelection(): number

    /**
     * Returns the name of the currently-highlighted series.
     * Only available when the highlightSeriesOpts option is in use.
     */
    public getHighlightSeries(): string

    /**
     * Returns true if the currently-highlighted series was locked
     * via setSelection(..., seriesName, true).
     */
    public isSeriesLocked(): boolean

    /**
     * Returns the number of y-axes on the chart.
     */
    public numAxes(): number

    /**
     * Changes various properties of the graph. These can include:
     * <ul>
     * <li>file: changes the source data for the graph</li>
     * <li>errorBars: changes whether the data contains stddev</li>
     * </ul>
     *
     * There's a huge variety of options that can be passed to this method. For a
     * full list, see http://dygraphs.com/options.html.
     *
     * @param {Object} input_attrs The new properties and values
     * @param {boolean} block_redraw Usually the chart is redrawn after every
     *         call to updateOptions(). If you know better, you can pass true to
     *         explicitly block the redraw. This can be useful for chaining
     *         updateOptions() calls, avoiding the occasional infinite loop and
     *         preventing redraws when it's not necessary (e.g. when updating a
     *         callback).
     */
    public updateOptions(inputAttrs: Options, blockRedraw?: boolean): void

    /**
     * Resizes the dygraph. If no parameters are specified, resizes to fill the
     * containing div (which has presumably changed size since the dygraph was
     * instantiated. If the width/height are specified, the div will be resized.
     *
     * This is far more efficient than destroying and re-instantiating a
     * Dygraph, since it doesn't have to reparse the underlying data.
     *
     * @param {number} width Width (in pixels)
     * @param {number} height Height (in pixels)
     */
    public resize(width?: number, height?: number): void

    /**
     * Adjusts the number of points in the rolling average. Updates the graph to
     * reflect the new averaging period.
     * @param {number} length Number of points over which to average the data.
     */
    public adjustRoll(length: number): void

    /**
     * Returns a boolean array of visibility statuses.
     */
    public visibility(): boolean[]

    /**
     * Changes the visiblity of a series.
     *
     * @param {number} num the series index
     * @param {boolean} value true or false, identifying the visibility.
     */
    public setVisibility(num: number, value: boolean): void

    /**
     * Update the list of annotations and redraw the chart.
     * See dygraphs.com/annotations.html for more info on how to use annotations.
     * @param ann {Array} An array of annotation objects.
     * @param suppressDraw {Boolean} Set to "true" to block chart redraw (optional).
     */
    public setAnnotations(
      ann: dygraphs.Annotation[],
      suppressDraw?: boolean
    ): void

    /**
     * Return the list of annotations.
     */
    public annotations(): dygraphs.Annotation[]

    /**
     * Get the list of label names for this graph. The first column is the
     * x-axis, so the data series names start at index 1.
     *
     * Returns null when labels have not yet been defined.
     */
    public getLabels(): string[]

    /**
     * Get the index of a series (column) given its name. The first column is the
     * x-axis, so the data series start with index 1.
     */
    public indexFromSetName(name: string): number

    /**
     * Trigger a callback when the dygraph has drawn itself and is ready to be
     * manipulated. This is primarily useful when dygraphs has to do an XHR for the
     * data (i.e. a URL is passed as the data source) and the chart is drawn
     * asynchronously. If the chart has already drawn, the callback will fire
     * immediately.
     *
     * This is a good place to call setAnnotations().
     */
    public ready(callback: (g: Dygraph) => any): void
  }

  export interface Options extends PerSeriesOptions, PerAxisOptions {
    /**
     * Set this option to animate the transition between zoom windows. Applies to programmatic
     * and interactive zooms. Note that if you also set a drawCallback, it will be called several
     * times on each zoom. If you set a zoomCallback, it will only be called after the animation
     * is complete.
     */
    animatedZooms?: boolean

    /**
     * If provided, this function is called whenever the user clicks on an annotation.
     */
    annotationClickHandler?: (
      annotation: dygraphs.Annotation,
      point: Point,
      dygraph: Dygraph,
      event: MouseEvent<Element>
    ) => any

    /**
     * If provided, this function is called whenever the user double-clicks on an annotation.
     */
    annotationDblClickHandler?: (
      annotation: dygraphs.Annotation,
      point: Point,
      dygraph: Dygraph,
      event: MouseEvent<Element>
    ) => any

    /**
     * If provided, this function is called whenever the user mouses out of an annotation.
     */
    annotationMouseOutHandler?: (
      annotation: dygraphs.Annotation,
      point: Point,
      dygraph: Dygraph,
      event: MouseEvent<Element>
    ) => any

    /**
     * If provided, this function is called whenever the user mouses over an annotation.
     */
    annotationMouseOverHandler?: (
      annotation: dygraphs.Annotation,
      point: Point,
      dygraph: Dygraph,
      event: MouseEvent<Element>
    ) => any

    /**
     * Defines per-axis options. Valid keys are 'x', 'y' and 'y2'. Only some options may be set
     * on a per-axis basis. If an option may be set in this way, it will be noted on this page.
     * See also documentation on <a href='http://dygraphs.com/per-axis.html'>per-series and
     * per-axis options</a>.
     */
    axes?: {
      x?: PerAxisOptions
      y?: PerAxisOptions
      y2?: PerAxisOptions
    }

    /**
     * A function to call when the canvas is clicked.
     */
    clickCallback?: (
      e: MouseEvent<Element>,
      xval: number,
      points: Point[]
    ) => any

    /**
     * If <strong>colors</strong> is not specified, saturation of the automatically-generated
     * data series colors. (0.0-1.0).
     */
    colorSaturation?: number

    /**
     * If colors is not specified, value of the data series colors, as in hue/saturation/value.
     * (0.0-1.0, default 0.5)
     */
    colorValue?: number

    /**
     * List of colors for the data series. These can be of the form "#AABBCC" or
     * "rgb(255,100,200)" or "yellow", etc. If not specified, equally-spaced points around a
     * color wheel are used. Overridden by the 'color' option.
     */
    colors?: string[]

    /**
     * Usually, when Dygraphs encounters a missing value in a data series, it interprets this as
     * a gap and draws it as such. If, instead, the missing values represents an x-value for
     * which only a different series has data, then you'll want to connect the dots by setting
     * this to true. To explicitly include a gap with this option set, use a value of NaN.
     */
    connectSeparatedPoints?: boolean

    /**
     * When set, parse each CSV cell as "low;middle;high". Error bars will be drawn for each
     * point between low and high, with the series itself going through middle.
     */
    customBars?: boolean

    /**
     * Custom DataHandler. This is an advanced customization. See http://bit.ly/151E7Aq.
     */
    dataHandler?: any

    /**
     * Initially zoom in on a section of the graph. Is of the form [earliest, latest], where
     * earliest/latest are milliseconds since epoch. If the data for the x-axis is numeric, the
     * values in dateWindow must also be numbers.
     */
    dateWindow?: number[]

    /**
     * The delimiter to look for when separating fields of a CSV file. Setting this to a tab is
     * not usually necessary, since tab-delimited data is auto-detected.
     */
    delimiter?: string

    /**
     * Unless it's run in scientific mode (see the <code>sigFigs</code> option), dygraphs
     * displays numbers with <code>digitsAfterDecimal</code> digits after the decimal point.
     * Trailing zeros are not displayed, so with a value of 2 you'll get '0', '0.1', '0.12',
     * '123.45' but not '123.456' (it will be rounded to '123.46'). Numbers with absolute value
     * less than 0.1^digitsAfterDecimal (i.e. those which would show up as '0.00') will be
     * displayed in scientific notation.
     */
    digitsAfterDecimal?: number

    /**
     * Only applies when Dygraphs is used as a GViz chart. Causes string columns following a data
     * series to be interpreted as annotations on points in that series. This is the same format
     * used by Google's AnnotatedTimeLine chart.
     */
    displayAnnotations?: boolean

    /**
     * When set, draw the X axis at the Y=0 position and the Y axis at the X=0 position if those
     * positions are inside the graph's visible area. Otherwise, draw the axes at the bottom or
     * left graph edge as usual.
     */
    drawAxesAtZero?: boolean

    /**
     * When set, this callback gets called every time the dygraph is drawn. This includes the
     * initial draw, after zooming and repeatedly while panning.
     */
    // tslint:disable-next-line:variable-name
    drawCallback?: (dygraph: Dygraph, is_initial: boolean) => any

    /**
     * Draw points at the edges of gaps in the data. This improves visibility of small data
     * segments or other data irregularities.
     */
    drawGapEdgePoints?: boolean

    /**
     * Draw a custom item when a point is highlighted.    Default is a small dot matching the
     * series color. This method should constrain drawing to within pointSize pixels from (cx,
     * cy) Also see <a href='#drawPointCallback'>drawPointCallback</a>
     */
    drawHighlightPointCallback?: (
      g: Dygraph,
      seriesName: string,
      canvasContext: CanvasRenderingContext2D,
      cx: number,
      cy: number,
      color: string,
      pointSize: number
    ) => any

    /**
     * Draw a custom item when drawPoints is enabled. Default is a small dot matching the series
     * color. This method should constrain drawing to within pointSize pixels from (cx, cy).
     * Also see <a href='#drawHighlightPointCallback'>drawHighlightPointCallback</a>
     */
    drawPointCallback?: (
      g: Dygraph,
      seriesName: string,
      canvasContext: CanvasRenderingContext2D,
      cx: number,
      cy: number,
      color: string,
      pointSize: number
    ) => any

    /**
     * Does the data contain standard deviations? Setting this to true alters the input format.
     */
    errorBars?: boolean

    /**
     * Sets the data being displayed in the chart. This can only be set when calling
     * updateOptions; it cannot be set from the constructor. For a full description of valid data
     * formats, see the <a href='http://dygraphs.com/data.html'>Data Formats</a> page.
     */
    file?: Data

    /**
     * When set, attempt to parse each cell in the CSV file as "a/b", where a and b are integers.
     * The ratio will be plotted. This allows computation of Wilson confidence intervals (see
     * below).
     */
    fractions?: boolean

    /**
     * Height, in pixels, of the chart. If the container div has been explicitly sized, this will
     * be ignored.
     */
    height?: number

    /**
     * Whether to hide the legend when the mouse leaves the chart area.
     */
    hideOverlayOnMouseOut?: boolean

    /**
     * When set, this callback gets called every time a new point is highlighted.
     */
    highlightCallback?: (
      event: MouseEvent<Element>,
      xval: number,
      points: Point[],
      row: number,
      seriesName: string
    ) => any

    /**
     * Fade the background while highlighting series. 1=fully visible background (disable
     * fading), 0=hiddden background (show highlighted series only).
     */
    highlightSeriesBackgroundAlpha?: number

    /**
     * Sets the background color used to fade out the series in conjunction with 'highlightSeriesBackgroundAlpha'.
     * Default: rgb(255, 255, 255)
     */
    highlightSeriesBackgroundColor?: string

    /**
     * When set, the options from this object are applied to the timeseries closest to the mouse
     * pointer for interactive highlighting. See also 'highlightCallback'. Example:
     * highlightSeriesOpts: { strokeWidth: 3 }.
     */
    highlightSeriesOpts?: PerSeriesOptions

    /**
     * Usually, dygraphs will use the range of the data plus some padding to set the range of the
     * y-axis. If this option is set, the y-axis will always include zero, typically as the
     * lowest value. This can be used to avoid exaggerating the variance in the data
     */
    includeZero?: boolean

    interactionModel?: any

    /**
     * When this option is passed to updateOptions() along with either the
     * <code>dateWindow</code> or <code>valueRange</code> options, the zoom flags are not changed
     * to reflect a zoomed state. This is primarily useful for when the display area of a chart
     * is changed programmatically and also where manual zooming is allowed and use is made of
     * the <code>isZoomed</code> method to determine this.
     */
    isZoomedIgnoreProgrammaticZoom?: boolean

    /**
     * A name for each data series, including the independent (X) series. For CSV files and
     * DataTable objections, this is determined by context. For raw data, this must be specified.
     * If it is not, default values are supplied and a warning is logged.
     */
    labels?: string[]

    /**
     * Show data labels in an external div, rather than on the graph.    This value can either be a
     * div element or a div id.
     */
    labelsDiv?: string | HTMLElement

    /**
     * Additional styles to apply to the currently-highlighted points div. For example, {
     * 'fontWeight': 'bold' } will make the labels bold. In general, it is better to use CSS to
     * style the .dygraph-legend class than to use this property.
     */
    labelsDivStyles?: {[cssProperty: string]: string}

    /**
     * Width (in pixels) of the div which shows information on the currently-highlighted points.
     */
    labelsDivWidth?: number

    /**
     * Put <code>&lt;br/&gt;</code> between lines in the label string. Often used in conjunction
     * with <strong>labelsDiv</strong>.
     */
    labelsSeparateLines?: boolean

    /**
     * Show zero value labels in the labelsDiv.
     */
    labelsShowZeroValues?: boolean

    /**
     * Show date/time labels according to UTC (instead of local time).
     */
    labelsUTC?: boolean

    /**
     * When to display the legend. By default, it only appears when a user mouses over the chart.
     * Set it to "always" to always display a legend of some sort. When set to "follow", legend
     * follows highlighted points. If set to 'never' then it will not appear at all.
     */
    legend?: 'always' | 'follow' | 'onmouseover' | 'never'

    /**
     * for details see https://github.com/danvk/dygraphs/pull/683
     */
    legendFormatter?: (legendData: LegendData) => string

    /**
     * A value representing the farthest a graph may be panned, in percent of the display. For
     * example, a value of 0.1 means that the graph can only be panned 10% pased the edges of the
     * displayed values. null means no bounds.
     */
    panEdgeFraction?: number

    /**
     * A function (or array of functions) which plot each data series on the chart.
     * TODO(danvk): more details! May be set per-series.
     */
    plotter?: any

    /**
     * Defines per-graph plugins. Useful for per-graph customization
     */
    plugins?: any[]

    /**
     * A function to call when a data point is clicked. and the point that was clicked.
     */
    pointClickCallback?: (e: MouseEvent<Element>, point: Point) => any

    /**
     * Height, in pixels, of the range selector widget. This option can only be specified at
     * Dygraph creation time.
     */
    rangeSelectorHeight?: number

    /**
     * The range selector mini plot fill color. This can be of the form "#AABBCC" or
     * "rgb(255,100,200)" or "yellow". You can also specify null or "" to turn off fill.
     */
    rangeSelectorPlotFillColor?: string

    /**
     * The range selector mini plot stroke color. This can be of the form "#AABBCC" or
     * "rgb(255,100,200)" or "yellow". You can also specify null or "" to turn off stroke.
     */
    rangeSelectorPlotStrokeColor?: string

    /**
     * Number of pixels to leave blank at the right edge of the Dygraph. This makes it easier to
     * highlight the right-most data point.
     */
    rightGap?: number

    /**
     * Number of days over which to average data. Discussed extensively above.
     */
    rollPeriod?: number

    /**
     * Defines per-series options. Its keys match the y-axis label names, and the values are
     * dictionaries themselves that contain options specific to that series. When this option is
     * missing, it falls back on the old-style of per-series options comingled with global
     * options.
     */
    series?: {
      [seriesName: string]: PerSeriesOptions
    }

    /**
     * Whether to show the legend upon mouseover.
     */
    showLabelsOnHighlight?: boolean

    /**
     * Show or hide the range selector widget.
     */
    showRangeSelector?: boolean

    /**
     * If the rolling average period text box should be shown.
     */
    showRoller?: boolean

    /**
     * When errorBars is set, shade this many standard deviations above/below each point.
     */
    sigma?: number

    /**
     * If set, stack series on top of one another rather than drawing them independently. The
     * first series specified in the input data will wind up on top of the chart and the last
     * will be on bottom. NaN values are drawn as white areas without a line on top, see
     * stackedGraphNaNFill for details.
     */
    stackedGraph?: boolean

    /**
     * Controls handling of NaN values inside a stacked graph. NaN values are
     * interpolated/extended for stacking purposes, but the actual point value remains NaN in the
     * legend display. Valid option values are "all" (interpolate internally, repeat leftmost and
     * rightmost value as needed), "inside" (interpolate internally only, use zero outside
     * leftmost and rightmost value), and "none" (treat NaN as zero everywhere).
     */
    stackedGraphNaNFill?: string

    /**
     * Text to display above the chart. You can supply any HTML for this value, not just text. If
     * you wish to style it using CSS, use the 'dygraph-label' or 'dygraph-title' classes.
     */
    title?: string

    /**
     * Height of the chart title, in pixels. This also controls the default font size of the
     * title. If you style the title on your own, this controls how much space is set aside above
     * the chart for the title's div.
     */
    titleHeight?: number

    /**
     * When set, this callback gets called before the chart is drawn. It details on how to use
     * this.
     */
    underlayCallback?: (
      context: CanvasRenderingContext2D,
      area: dygraphs.Area,
      dygraph: Dygraph
    ) => any

    /**
     * When set, this callback gets called every time the user stops highlighting any point by
     * mousing out of the graph.
     */
    unhighlightCallback?: (event: MouseEvent<Element>) => any

    /**
     * Which series should initially be visible? Once the Dygraph has been constructed, you can
     * access and modify the visibility of each series using the <code>visibility</code> and
     * <code>setVisibility</code> methods.
     */
    visibility?: boolean[]

    /**
     * Width, in pixels, of the chart. If the container div has been explicitly sized, this will
     * be ignored.
     */
    width?: number

    /**
     * Use in conjunction with the "fractions" option. Instead of plotting +/- N standard
     * deviations, dygraphs will compute a Wilson confidence interval and plot that. This has
     * more reasonable behavior for ratios close to 0 or 1.
     */
    wilsonInterval?: boolean

    /**
     * Height, in pixels, of the x-axis. If not set explicitly, this is computed based on
     * axisLabelFontSize and axisTickSize.
     */
    xAxisHeight?: number

    /**
     * Height of the x-axis label, in pixels. This also controls the default font size of the
     * x-axis label. If you style the label on your own, this controls how much space is set
     * aside below the chart for the x-axis label's div.
     */
    xLabelHeight?: number

    /**
     * Add the specified amount of extra space (in pixels) around the X-axis value range to
     * ensure points at the edges remain visible.
     */
    xRangePad?: number

    /**
     * A function which parses x-values (i.e. the dependent series). Must return a number, even
     * when the values are dates. In this case, millis since epoch are used. This is used
     * primarily for parsing CSV data. *=Dygraphs is slightly more accepting in the dates which
     * it will parse. See code for details.
     */
    xValueParser?: (val: string) => number

    /**
     * Text to display below the chart's x-axis. You can supply any HTML for this value, not just
     * text. If you wish to style it using CSS, use the 'dygraph-label' or 'dygraph-xlabel'
     * classes.
     */
    xlabel?: string

    /**
     * Text to display to the right of the chart's secondary y-axis. This label is only displayed
     * if a secondary y-axis is present. See <a
     * href='http://dygraphs.com/tests/two-axes.html'>this test</a> for an example of how to do
     * this. The comments for the 'ylabel' option generally apply here as well. This label gets a
     * 'dygraph-y2label' instead of a 'dygraph-ylabel' class.
     */
    y2label?: string

    /**
     * Width of the div which contains the y-axis label. Since the y-axis label appears rotated
     * 90 degrees, this actually affects the height of its div.
     */
    yLabelWidth?: number

    /**
     * If set, add the specified amount of extra space (in pixels) around the Y-axis value range
     * to ensure points at the edges remain visible. If unset, use the traditional Y padding
     * algorithm.
     */
    yRangePad?: number

    /**
     * Text to display to the left of the chart's y-axis. You can supply any HTML for this value,
     * not just text. If you wish to style it using CSS, use the 'dygraph-label' or
     * 'dygraph-ylabel' classes. The text will be rotated 90 degrees by default, so CSS rules may
     * behave in unintuitive ways. No additional space is set aside for a y-axis label. If you
     * need more space, increase the width of the y-axis tick labels using the yAxisLabelWidth
     * option. If you need a wider div for the y-axis label, either style it that way with CSS
     * (but remember that it's rotated, so width is controlled by the 'height' property) or set
     * the yLabelWidth option.
     */
    ylabel?: string

    /**
     * A function to call when the zoom window is changed (either by zooming in or out).
     */
    zoomCallback?: (
      minDate: number,
      maxDate: number,
      yRanges: Array<[number, number]>
    ) => any
  }

  export default DygraphClass
}

// Allow typescript to recognize json files

declare module "*.json" {
    const value: any;
    export default value;
}
