28 lines
1.1 KiB
JavaScript
28 lines
1.1 KiB
JavaScript
const template = require('lodash.template');
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const interpolate = /(?<!{){([^{]+?)}/g;
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/**
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* Template function
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* Takes strings like 'Your site is now available on {url}' and interpolates them with passed in data
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* Will ignore double or triple braces like {{get}} or {{{helpername}}}
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* Can handle escaped braces e.g. \\{\\{{helpername}\\}\\}
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* But there's a simple bare minimum escaping needed to make {{{helpername}}} work e.g. {\\{{helpername}}}
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*
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*
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* @param {String} string - string with optional {data properties}
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* @param {Object} [data] - optional data to interpolate
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* @returns {string} the interpolated string
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*/
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module.exports = (string, data) => {
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if (!data) {
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return string;
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}
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// We replace any escaped left braces with the unicode character so we can swap it back later
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let processedString = string.replace(/\\{/g, '\\U+007B');
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// Let lodash do its thing
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processedString = template(processedString, {interpolate})(data);
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// Replace our swapped out left braces and any escaped right braces
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return processedString.replace(/\\U\+007B/g, '{').replace(/\\}/g, '}');
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};
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