misc-utils-of-mine-generic/dist/src/string/template.js

Miscellaneous utilities for JavaScript/TypeScript that I often use

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.template = void 0;
var cache = {};
function template(str, data) {
    // Figure out if we're getting a template, or if we need to
    // load the template - and be sure to cache the result.
    var fn = !/\W/.test(str)
        ? (cache[str] = cache[str] || template(str))
        : // Generate a reusable function that will serve as a template
            // generator (and which will be cached).
            new Function('obj', 'var p=[],print=function(){p.push.apply(p,arguments);};' +
                // Introduce the data as local variables using with(){}
                'with(obj){p.push(\'' +
                // Convert the template into pure JavaScript
                str
                    .replace(/[\r\t\n]/g, ' ')
                    .split('<%')
                    .join('\t')
                    .replace(/((^|%>)[^\t]*)'/g, '$1\r')
                    .replace(/\t=(.*?)%>/g, '\',$1,\'')
                    .split('\t')
                    .join('\');')
                    .split('%>')
                    .join('p.push(\'')
                    .split('\r')
                    .join('\\\'') +
                '\');}return p.join(\'\');');
    // Provide some basic currying to the user
    return data ? fn(data) : fn;
}
exports.template = template;
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