65 lines
2.0 KiB
JavaScript
65 lines
2.0 KiB
JavaScript
let checkoutFilters = {};
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/**
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* Register filters for a specific extension.
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*
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* @param {string} namespace Name of the extension namespace.
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* @param {Object} filters Object of filters for that namespace. Each key of
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* the object is the name of a filter.
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*/
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export const __experimentalRegisterCheckoutFilters = ( namespace, filters ) => {
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checkoutFilters = {
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...checkoutFilters,
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[ namespace ]: filters,
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};
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};
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/**
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* Get all filters with a specific name.
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*
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* @param {string} filterName Name of the filter to search for.
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* @return {Function[]} Array of functions that are registered for that filter
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* name.
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*/
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const getCheckoutFilters = ( filterName ) => {
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const namespaces = Object.keys( checkoutFilters );
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const filters = namespaces
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.map( ( namespace ) => checkoutFilters[ namespace ][ filterName ] )
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.filter( Boolean );
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return filters;
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};
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/**
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* Apply a filter.
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*
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* @param {Object} o Object of arguments.
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* @param {string} o.filterName Name of the filter to apply.
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* @param {any} o.defaultValue Default value to filter.
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* @param {any} [o.arg] Argument to pass to registered functions. If
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* several arguments need to be passed, use an
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* object.
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* @param {Function} [o.validation] Function that needs to return true when the
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* filtered value is passed in order for the
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* filter to be applied.
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* @return {any} Filtered value.
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*/
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export const __experimentalApplyCheckoutFilter = ( {
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filterName,
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defaultValue,
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arg = null,
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validation = () => true,
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} ) => {
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const filters = getCheckoutFilters( filterName );
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let value = defaultValue;
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filters.forEach( ( filter ) => {
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try {
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const newValue = filter( value, arg );
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value = validation( newValue ) ? newValue : value;
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} catch ( e ) {
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// eslint-disable-next-line no-console
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console.log( e );
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}
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} );
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return value;
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};
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