@flourish/number-localization

Input and output number separators

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@flourish/number-localization
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Readme

Flourish number localization

Flourish module for setting the numeric separators used in a template. Used in conjunction with Flourish number formatter.

Install

To install the module, type:

npm install @flourish/number-localization

To add the module's settings block, include the following in a templates' template.yml file:

- property: localization
  import: "@flourish/number-localization"

Usage

Include a (usually empty) object in the state declaration:

    var state = {
        /* Other declarations of default values */
        localization: {},
        /* Any further state properties */
    }

Make sure an instance of the module is initialised somewhere in the code before draw is called:

import initLocalization from "@flourish/number-localization";;
/* Other imports and code */
var localization = initLocalization(state.localization);
/* Other initialisation code, eg Flourish-number-formatter instances */
export { localization/*, etc */ };

This will add two properties to state.localization (if they don't already exist), input_decimal_separator (defaults to ".") and output_separators (defaults to ",."). The exported localization object contains two methods, getParser and getFormatterFunction.

The getParser method returns a function for parsing text into numbers based on the value of input_decimal_separator at the time it is called;

import { localization } from "init.js";
var parser = localization.getParser();
["1.2", "-4,000", "$326k"].map(parser) // Returns [1.2, -4000, 326] for input_decimal_separator === "."
// The above would return [12, -4, 326] for input_decimal_separator === ","

The getFormatterFunction method creates a locale function based on the value of output_separators at the time it is called. It is meant to be passed on to instances of Flourish number formatter:

import { localization, getXAxisFormatter, getYAxisFormatter } from "init.js";
var localeFunction = localization.getFormatterFunction();
var xFormat = getXAxisFormatter(localeFunction);
var yFormat = getYAxisFormatter(localeFunction);

If you find any bugs or have a feature request, please open an issue on github!

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