93 lines
3.3 KiB
JavaScript
93 lines
3.3 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
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const escape = require('./escape.js');
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const attempt = require('../function/attempt.js');
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const defaults = require('../object/defaults.js');
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const toString = require('../util/toString.js');
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const esTemplateRegExp = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
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const unEscapedRegExp = /['\n\r\u2028\u2029\\]/g;
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const noMatchExp = /($^)/;
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const escapeMap = new Map([
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['\\', '\\'],
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["'", "'"],
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['\n', 'n'],
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['\r', 'r'],
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['\u2028', 'u2028'],
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['\u2029', 'u2029'],
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]);
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function escapeString(match) {
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return `\\${escapeMap.get(match)}`;
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}
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const defaultInterpolateRegExp = /<%=([\s\S]+?)%>/g;
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const templateSettings = {
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escape: /<%-([\s\S]+?)%>/g,
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evaluate: /<%([\s\S]+?)%>/g,
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interpolate: defaultInterpolateRegExp,
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variable: '',
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imports: {
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_: {
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escape: escape.escape,
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template,
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},
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},
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};
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function template(string, options, guard) {
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string = toString.toString(string);
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if (guard) {
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options = templateSettings;
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}
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options = defaults.defaults({ ...options }, templateSettings);
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const delimitersRegExp = new RegExp([
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options.escape?.source ?? noMatchExp.source,
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options.interpolate?.source ?? noMatchExp.source,
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options.interpolate === defaultInterpolateRegExp ? esTemplateRegExp.source : noMatchExp.source,
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options.evaluate?.source ?? noMatchExp.source,
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'$',
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].join('|'), 'g');
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let lastIndex = 0;
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let isEvaluated = false;
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let source = `__p += ''`;
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for (const match of string.matchAll(delimitersRegExp)) {
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const [fullMatch, escapeValue, interpolateValue, esTemplateValue, evaluateValue] = match;
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const { index } = match;
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source += ` + '${string.slice(lastIndex, index).replace(unEscapedRegExp, escapeString)}'`;
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if (escapeValue) {
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source += ` + _.escape(${escapeValue})`;
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}
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if (interpolateValue) {
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source += ` + ((${interpolateValue}) == null ? '' : ${interpolateValue})`;
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}
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else if (esTemplateValue) {
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source += ` + ((${esTemplateValue}) == null ? '' : ${esTemplateValue})`;
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}
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if (evaluateValue) {
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source += `;\n${evaluateValue};\n __p += ''`;
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isEvaluated = true;
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}
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lastIndex = index + fullMatch.length;
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}
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const imports = defaults.defaults({ ...options.imports }, templateSettings.imports);
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const importsKeys = Object.keys(imports);
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const importValues = Object.values(imports);
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const sourceURL = `//# sourceURL=${options.sourceURL ? String(options.sourceURL).replace(/[\r\n]/g, ' ') : `es-toolkit.templateSource[${Date.now()}]`}\n`;
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const compiledFunction = `function(${options.variable || 'obj'}) {
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let __p = '';
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${options.variable ? '' : 'if (obj == null) { obj = {}; }'}
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${isEvaluated ? `function print() { __p += Array.prototype.join.call(arguments, ''); }` : ''}
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${options.variable ? source : `with(obj) {\n${source}\n}`}
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return __p;
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}`;
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const result = attempt.attempt(() => new Function(...importsKeys, `${sourceURL}return ${compiledFunction}`)(...importValues));
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result.source = compiledFunction;
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if (result instanceof Error) {
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throw result;
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}
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return result;
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}
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exports.template = template;
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exports.templateSettings = templateSettings;
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