@automattic/interpolate-components

Interpolate Components

Interpolate-Components allows us to work with structured markup as strings and then hydrate them into a tree of React components. This is particularly useful for internationalizing strings, where a sentence or paragraph containing structured markup should be translated as a single entity. This module allows us to interpolate components into a string without using the hack of dangerouslySetInnerHTML().

Module Footprint

interpolateComponents takes a single options object as an argument and returns a React element containing structured descendent components which can be rendered into a document. The option attributes are:

• mixedString A string that contains component tokens to be interpolated
• components (optional) An object with components assigned to named attributes. If not provided, mixedString is returned.
• throwErrors (optional) Whether errors should be thrown (as in pre-production environments) or we should more gracefully return the un-interpolated original string (as in production). This is optional and is false by default.

Component tokens

Component tokens are strings (containing letters, numbers, or underscores only) wrapped inside double-curly braces and have an opening, closing, and self-closing syntax, similar to html.

// example component token syntax
const example = '{{link}}opening and closing syntax example{{/link}}';
const example2 = 'Here is a self-closing example: {{input/}}';

Example Usage

import interpolateComponents from '@automattic/interpolate-components';
const children = interpolateComponents( {
	mixedString: 'This is a {{em}}fine{{/em}} example.',
	components: { em: <em /> },
} );
const jsxExample = <p>{ children }</p>;
// when injected into the doc, will render as:
// <p>This is a <em>fine</em> example.</p>