81 lines
2.3 KiB
JavaScript
81 lines
2.3 KiB
JavaScript
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module.exports = function(userOptions = {}) {
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const parsedOptions = {};
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for(const [key, value] of Object.entries(userOptions)) {
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if(value === undefined || value === null) {
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continue;
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}
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switch(key.toLowerCase()) {
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case 'noopener':
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case 'noreferrer':
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Object.assign(parsedOptions, validateBoolean(key.toLowerCase(), value));
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break;
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case 'ignore': Object.assign(parsedOptions, validateIgnore(value));
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break;
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case 'elements': Object.assign(parsedOptions, validateElements(value));
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break;
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default: throw new Error(`Automatic Noopener plugin received an unrecognised option: ${key}`);
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}
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}
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parsedOptions.parsed = true;
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return parsedOptions;
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}
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function validateBoolean(key, value) {
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if(typeof value !== 'boolean') {
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throw new Error(`Automatic Noopener plugin requires the ${key} option to be a Boolean. Received ${typeof value}: ${JSON.stringify(value)}`);
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}
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else {
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return {[key]: value};
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}
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}
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function validateIgnore(value) {
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if(value instanceof RegExp) {
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return {ignore: value};
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}
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else {
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throw new Error(`Automatic Noopener plugin requires the ignore option to be a Regular Expression. Received ${typeof value}: ${JSON.stringify(value)}`);
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}
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}
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function validateElements(elements) {
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if(!Array.isArray(elements)) {
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throw new Error(`Automatic Noopener plugin requires the elements option to be an Array. Received ${typeof elements}`);
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}
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else if(elements.some(element => typeof element !== 'string')) {
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const invalidElements = elements
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.filter(element => {
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return typeof element !== 'string';
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})
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.reduce((acc, cur) => {
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return acc += `${typeof cur}: ${JSON.stringify(cur)}, `;
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}, '')
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.slice(0, -2);
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throw new Error(`Automatic Noopener plugin requires the elements option to contain only Strings. Received: ${invalidElements}`);
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}
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else {
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const validElements = ['a', 'area', 'form'];
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const uniqueElements = new Set();
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elements.forEach(element => {
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element = element.trim().toLowerCase();
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if(validElements.includes(element)) {
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uniqueElements.add(element);
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}
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else {
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throw new Error(`Automatic Noopener plugin requires the elements option to contain 'a', 'area' and/or 'form'. Received: ${JSON.stringify(element)}`);
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}
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});
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return {elements: Array.from(uniqueElements)};
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}
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}
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