47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
'use strict';
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const Walker = require('node-source-walk');
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const types = require('ast-module-types');
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/**
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* @param {String|Object} content - A file's string content or its AST
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* @return {String[]} The file's dependencies
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*/
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module.exports = function(content) {
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const walker = new Walker();
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const dependencies = [];
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walker.walk(content, function(node) {
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if (!types.isRequire(node) ||
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!node.arguments ||
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!node.arguments.length) {
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return;
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}
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if (types.isPlainRequire(node)) {
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const result = extractDependencyFromRequire(node);
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if (result) {
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dependencies.push(result);
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}
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} else if (types.isMainScopedRequire(node)) {
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dependencies.push(extractDependencyFromMainRequire(node));
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}
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});
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return dependencies;
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};
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function extractDependencyFromRequire(node) {
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if (node.arguments[0].type === 'Literal' || node.arguments[0].type === 'StringLiteral') {
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return node.arguments[0].value;
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} else if (node.arguments[0].type === 'TemplateLiteral') {
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return node.arguments[0].quasis[0].value.raw;
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}
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}
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function extractDependencyFromMainRequire(node) {
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return node.arguments[0].value;
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}
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