@munichremarkets/fixed-interest

v2.0.1

Published

16 days ago

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michaelewers

Munich Re Markets Fixed Interest Widget

This package provides the Fixed Interest widget by Munich Re Markets for integration into your website.

Installation

If you use NPM as a package manager, run

  npm install --save @munichremarkets/fixed-interest

And if you use Yarn:

  yarn add @munichremarkets/fixed-interest

Integration

The Fixed Interest widget provides a (plain JavaScript) rendering API in the form of the renderFixedInterest function that is used to display the widget on the page and pass data to the widget.

Importing from NPM

The Fixed Interest package contains JavaScript (ES5) code in the ECMAScript module format, so you need to use a bundler that supports this format, such as Webpack or Rollup. Using ES6-style imports, your code might look like this:

import { renderFixedInterest } from '@munichremarkets/fixed-interest';

TypeScript declaration files (.d.ts) are also included in the package, providing typings and enhanced IDE support for the rendering API.

Rendering the widget

In order to render the widget, you need to invoke the renderFixedInterest rendering function that is made available as described above. The following data needs to be provided when invoking the rendering function:

A target DOM element (typically a <div> element) into which the widget should be rendered
A configuration object providing data to the widget, see section "Configuring the widget" below

For example, a call to the rendering function might look like this (ES6):

const target = document.getElementById('widget-target');

renderFixedInterest(target, {
  /* configuration data, see below */
});

Please make sure to invoke the rendering function after the DOM has been loaded, e.g. by putting the call into a <script> tag at the end of the <body> or into a DOMContentLoaded event handler.

Note

You need to make sure that the process.env object is available at runtime and contains a NODE_ENV property defining the current environment, see the Node.js documentation. Note that it is not enough to just replace process.env.NODE_ENV, but you need to replace process.env as a whole. Depending on your bundler, you can use these tools:

For Webpack, use the DefinePlugin:

new webpack.DefinePlugin({
  'process.env': JSON.stringify({ NODE_ENV: process.env.NODE_ENV }),
});

For Vite, use the define config option:

defineConfig({
  // ...

  define: {
    'process.env': JSON.stringify({ NODE_ENV: process.env.NODE_ENV }),
  },
});

Warning: Do not use JSON.stringify(process.env) as this may leak other environment variables into your bundle.

Unmounting the widget

The rendering function returns a cleanup function that can be used to unmount the widget like this:

const target = document.getElementById('widget-target');

const unmountWidget = renderFixedInterest(target, {
  /* configuration data, see below */
});

/* use `unmountWidget` e.g. in an event listener */

Configuring the widget

The configuration object passed to renderFixedInterest can contain the following properties (example values):

{
  // Configuration for the two selectable fixed interest terms ("monthly" and "yearly")
  // Mandatory
  fixedInterestTermConfig: {
    monthly: {
      // the dummy ISIN of monthly fixed interest
      // Mandatory
      isin: 'DE1111111111',

      // the interest rate of monthly fixed interest
      // Mandatory
      interestRate: 0.03,
    },
    yearly: {
      // the dummy ISIN of yearly fixed interest
      // Mandatory
      isin: 'DE2222222222',

      // the interest rate of yearly fixed interest
      // Mandatory
      interestRate: 0.03,
    },
  },

  // Base URL of fund data backend
  // Optional, default: 'https://data.munichremarkets.com/funddata'
  // May optionally end in '/'
  fundBackendBaseUrl: 'https://some-url',

  // UUID of the fund universe to use
  // This can be used to customize the set of funds available in the widget
  // Optional - if not specified, a default fund universe is used
  fundUniverseId: 'd090af5f-2258-4838-88d3-ca462696c7fb',

  // Callback that is invoked when the Fund Details Link is clicked and can provide external links for the fund.
  // Optional - if not specified, a link to the PDF factsheet URL from the fund data backend is displayed
  //
  // Arguments:
  // `isin` (mandatory): ISIN of the fund
  // `factsheetPdfUrl` (mandatory): PDF factsheet URL from the fund data backend, may be an empty string
  // `externalUrl` (optional): External URL from the fund data backend if available
  //
  // If specified, the callback must return an object in one of the two formats shown in the examples below.
  // Those formats differ in their effect on the behaviour of the widget.

  // 1. This configuration results in the specified links being displayed in the Fund Details Modal
  generateFundDetailsLinks: (isin, factsheetPdfUrl, externalUrl) => ({
    mode: 'indirect',
    links: [
      { localizedCaption: `Factsheet Pdf Link`, targetUrl: factsheetPdfUrl },
      { localizedCaption: `Link for ${isin}`, targetUrl: `https://www.example.com/${isin}` },
      { localizedCaption: `Another link for ${isin}`, targetUrl: `https://www.example2.com/${isin}` },
    ],
  }),

  // 2. This configuration opens the specified targetUrl in a new tab instead of a modal upon clicking the Details link of a fund
  //generateFundDetailsLinks: (isin, factsheetPdfUrl, externalUrl) => ({
  //  mode: 'direct',
  //  targetUrl: `https://www.example.com/${isin}`,
  //})

  // Whether to include widget-scoped Bootstrap 4.x CSS into the page
  // Optional, default: false
  // Set this to `true` if you are not already using Bootstrap on your website
  includeBootstrap4Css: true,

  // Configuration of which indicators are shown when viewing the detailed information for a specific fund
  // Optional - if not specified, a default indicator configuration is used (Sectors, Asset Classes, Regions)
  //
  // There are three slots, all of which are optional:
  // * On narrow screens, all slots that are specified are shown from top to bottom in order
  // * On wide screens, slot 1 is shown on the left, slot 2 in the center, and slot 3 on the right
  // * If none of the slots is specified, no indicator area is shown
  //
  // The following indicators are available for each slot:
  // IndicatorType.Sectors, IndicatorType.AssetClasses, IndicatorType.Regions, IndicatorType.ReturnRisk, IndicatorType.TopHoldings
  indicatorConfig: {
    slot1: IndicatorType.Sectors,
    slot2: IndicatorType.AssetClasses,
    slot3: IndicatorType.Regions,
  },

  // A token provided in JWT (JSON Web Token) format (see https://jwt.io).
  // The token is required for rendering the widget and permits access to the fund data backend.
  // Mandatory
  jwt: '<some-token>',

  // Locale to use for localized texts
  // Mandatory
  // Currently available locales: Locale.DeDe, Locale.EnUs, Locale.EnGb
  locale: Locale.EnUs,

  // Callback to be invoked when the widget's workflow is finished and an updated portfolio is selected
  // Mandatory
  // Arguments:
  // `updatedPortfolio` (mandatory): list of funds contained in the updated portfolio like this:
  // [
  //   {
  //     // ISIN of the fund
  //     isin: 'LU0323357649',
  //
  //     // Share of the fund within the portfolio, from 0 to 1
  //     share: 0.5,
  //   },
  //
  //   {
  //     isin: 'FR0010135103',
  //     share: 0.5,
  //   }
  // ]
  // `fixedInterestTern` (mandatory): the term of fixed interest chosen by the customer ("yearly" or "monthly")
  onConfirmSelection: (updatedPortfolio, fixedInterestTerm) => console.log(updatedPortfolio, fixedInterestTerm),

  // The current portfolio of the customer
  // Mandatory
  portfolio: [
    {
      // ISIN of the fund
      // Mandatory
      isin: 'LU0323357649',

      // Share of the fund within the portfolio, from 0 to 1
      // Mandatory
      share: 0.5,
    },

    {
      isin: 'FR0010135103',
      share: 0.5,
    },
  ],

  // Whether to include information about ESG compliance for funds
  // Optional - default: false
  // If set to true, the ESG compliance information for funds is displayed
  showEsgCompliance: true,

  // Custom texts per locale
  // Optional - if not specified, default texts are used
  textOverrides: {
    'widgets.fixedInterest.step1.heading': {
      // Texts can be provided in any supported locale (see `locale` option)
      [Locale.DeDe]: 'Wechsel in Festgeld',
      [Locale.EnUs]: 'Change into fixed interest',
    },
  },

  // The total value of the customer's portfolio in EUR
  // Mandatory
  totalPortfolioValue: 120000,
}

The following things should be considered in order to ensure that the widget works as intended.

Note: Providing data that does not adhere to the documented API of the widget may lead to unexpected behavior or the widget not working altogether.

Text override mechanism

Some texts that are displayed by the widget can be overridden by providing the textOverrides option in the configuration object. It expects an object in the form of

{
    'some.overridable.key': {
        [Locale.DeDe]: 'Some German text',
        [Locale.EnUs]: 'Some English text (US)',
        [Locale.EnGb]: 'Some English text (GB)',
    },
    'some.other.key': { /* ... */ }
}

where some.overridable.key is a localization key specified by the widget.

Note: The override mechanism is entirely optional. If it is omitted, default texts are used instead.

Semantic markup

Some texts can contain basic semantic HTML markup that is sanitized before displaying. The following tags are allowed and will be displayed as bold, italic, underlined, etc.: strong, b, em, i, u, br, p.

Note: HTML tags cannot contain attributes. If provided anyway, they are removed during sanitization ( e.g. <em class="some-classname">some text</em> will be converted to <em>some text</em>).

Interpolation

In some cases, texts might need to include dynamic values (e.g. monetary values or percentages). Such values can be referenced in the text using {{someVariable}}, where someVariable is a predefined name specific to the respective text key and will be replaced with the actual value during runtime.

Empty default text

In some cases default texts might be empty, which will cause the enclosing markup element (e.g. an information icon with accompanying text label) to purposefully not be displayed in the widget. This is a mechanism to remove markup elements entirely when the text that they usually display is missing. In these cases, a text override can be supplied to make the element visible again.

Mandatory and optional fields in the configuration

When using TypeScript, your IDE should automatically indicate which fields are mandatory/optional via the provided typings.
When using plain JavaScript, please refer to the section above regarding mandatory/optional fields.
The widget will perform a schema validation on the provided configuration and will fail to render if the validation fails. In this case you can then find additional information on why the validation failed in the console of your browser.

Providing enumeration values in the configuration

Enumerations can be directly imported from the widget library. This works with both plain JavaScript and TypeScript. For instance, the Locale enumeration can be used like this:

import { renderFixedInterest, Locale } from '@munichremarkets/fixed-interest';

const target = document.getElementById('widget-target');
renderFixedInterest(target, { locale: Locale.En_US, ... });

Although other ways of providing an enumeration value are technically possible (e.g. numerical or string values), it is considered improper usage and may stop working at any point.

Recommendations

Do not use a side navigation besides the widget.
Do not implement the widget in modals.
The respective widget should take as much height as it needs.
Provide at least 1440px width for the widgets.
Don't include much content above and below the widget.

Due to the scrolling behavior of the widget, it is recommended that you allow the widget to take the full height of the page with possible exceptions being a header and a footer. The widget assumes that a sticky header may be present on mobile viewports but not on desktop viewports. This distinction comes into play when the widget automatically scrolls to the top because this means scrolling to the top of the page on mobile viewports but to the top of the widget for desktop viewports.

Styling

Framework

The Fixed Interest widget uses version 4.x of the Bootstrap framework for styling. When integrating the widget into your website, you need to do different things depending on whether your website uses Bootstrap, too:

Case 1: Your website uses Bootstrap

In this case, Bootstrap CSS rules are already present on your website and all the Bootstrap theme colors defined by your website will automatically be used by the widget. Note that the supported range of Bootstrap versions is from 4.2 to 4.6 (inclusive).

Case 2: Your website does not use Bootstrap

In this case, you are required to set the includeBootstrap4Css flag to true when invoking the widget rendering function, so that the Bootstrap 4.x CSS rules shipped with the widget are included on your page. Those CSS rules will not affect the appearance of elements outside the widget because they are scoped to the .sri-widget CSS class that is assigned to a DOM element the widget is rendered into.

Adaptation of styling

By default, the styling of the widget automatically adapts to the styling of your website to a certain extent. However, you can still customize the appearance if necessary.

Automatic styling

Fonts

Since the widget does not define its own font, any font you define in the DOM tree above the widget will automatically be used within the widget.

Note: If your website uses external web fonts, e.g. from Google Fonts, you need to set crossorigin or crossorigin="anonymous" on the corresponding <link> tag. Otherwise, those web fonts cannot be used in certain parts of the print views produced by the widget, and you will see a fallback font instead.

Example:

<link href="https://fonts.googleapis.com/css2?family=Roboto" rel="stylesheet" crossorigin />

Spacings

Font sizes and most of the spacings are defined in units of rem (root em), so these sizes will automatically be set relative to the font size of your website's <body> element.

Width

The widget will automatically fill the full width of its parent element.

Theming

Primary theming API: Overriding Bootstrap theme colors & CSS variables

Regardless of whether you are providing a custom-themed Bootstrap or not, certain colors (SRI colors) need to be customized. The minimal set of CSS variables that should be overridden are element, and the shades of primary and secondary:

primary-[50-900]
secondary-[50-900]
element-[0-23]
element-other

The element-* colors are used within indicators and charts (funds, categories, ...). The element-other color is used specifically for those instances where it's necessary to display an "Other" category in an indicator or chart.

By default, all additional colors are derived from those colors so overriding them should already provide a good baseline for theming.

To make sure that your settings for these variables take precedence over the defaults defined by the widget, use the CSS selector .sri-widget.sri-external like this:

.sri-widget.sri-external {
  --primary-500: red;
}

Case 1: Your website uses Bootstrap

Bootstrap theme colors: Bootstrap components used throughout the Munich Re Markets widgets will be styled correctly, CSS variables for those customized colors are expected to be available on :root. This should require no further action.

Case 2: Your website does not use Bootstrap

Bootstrap theme colors: The CSS variables referring to the Bootstrap theme colors need to be overridden:

--primary
--secondary
--success
--danger
--warning
--info
--light
--dark

To make sure that your settings for these variables take precedence over the defaults defined by the widget, use the CSS selector .sri-widget.sri-external like this:

.sri-widget.sri-external {
  --primary: red;
}

Note:

Bootstrap internally uses SCSS variables, which are only present at build time. Since you will use the Bootstrap CSS rules shipped with the widget if you don't provide your own, components provided by Bootstrap will not be themed properly by just overriding the CSS variables. Also, classes like .text-primary, .bg-primary etc. will use wrong color values. In those cases the according CSS classes have to be overridden individually (see next section).
Any style overrides except changing Bootstrap theme colors may stop working at any point and hence need to be thoroughly tested on every upgrade.

Secondary theming API: Overriding CSS classes

You can override each style of the application via CSS classes individually. Therefore, it is important to know the basic markup of the widget, which looks like this:

<!-- Passed into the rendering function by your website -->
<div>
  <!-- Created by the rendering function -->
  <div>
    <div class="sri-widget sri-external">
      <div class="sri-fixed-interest">
        <!-- Widget content -->
      </div>
    </div>
  </div>
</div>

If you want to style an element within the main content of the widget, prefix all CSS rules with .sri-widget.sri-external to ensure that your CSS rule is more specific than the ones shipped with the widget and hence overrides the latter. For example, to style a button (.sri-btn), use a CSS rule like this:

.sri-widget.sri-external .sri-btn {
  /* ... */
}

If you use other widgets on the same page and need to scope a rule specifically to the Fixed Interest widget, additionally include the widget-specific class like this:

.sri-widget.sri-external.sri-fixed-interest .sri-btn {
  /* ... */
}

There is one special case: Some elements need to be rendered directly into the <body> of your website to ensure that they cover other elements, e.g. modal dialogs and tooltips. For these elements, the markup looks like this:

<div class="sri-widget sri-external sri-fixed-interest sri-modal">
  <!-- Modal content -->
</div>

In this case, you can override styles within the modal using CSS rules like this:

.sri-widget.sri-external.sri-fixed-interest.sri-modal .sri-btn {
  /* ... */
}

Notes:

Use !important for rules originating from Bootstrap. This is because Bootstrap already declares all rules as !important, so your rules need to be !important, too, in order to override the Bootstrap rules.
Any style overrides except changing Bootstrap theme colors may stop working at any point and hence need to be thoroughly tested on every upgrade.

Recommendations for mobile viewports

Viewports in the "Extra small" (xs) and "Small" (sm) ranges of the responsive breakpoints defined by Bootstrap, i.e. narrower than 768px, are considered "mobile" viewports and larger ones are considered "desktop" viewports.

Although the Fixed Interest widget is generally responsive across all breakpoints, there are significant changes in layout between mobile and desktop viewports. Hence it is recommended to test your website in both variants.

Browser support

The following browsers are supported:

Chrome (latest version)
Firefox (latest version)
Safari on macOS and iOS (latest two major versions)