work.suroh.tk/node_modules/detective-es6/index.js

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2019-12-02 12:22:45 +00:00
'use strict';
var Walker = require('node-source-walk');
/**
* Extracts the dependencies of the supplied es6 module
*
* @param {String|Object} src - File's content or AST
* @param {Object} options - optional extra settings
* @return {String[]}
*/
module.exports = function(src, options) {
const walker = new Walker();
const dependencies = [];
if (typeof src === 'undefined') { throw new Error('src not given'); }
if (src === '') {
return dependencies;
}
walker.walk(src, function(node) {
switch (node.type) {
case 'ImportDeclaration':
if (options && options.skipTypeImports && node.importKind == 'type') {
break;
}
if (node.source && node.source.value) {
dependencies.push(node.source.value);
}
break;
case 'ExportNamedDeclaration':
case 'ExportAllDeclaration':
if (node.source && node.source.value) {
dependencies.push(node.source.value);
}
break;
case 'CallExpression':
if (node.callee.type === 'Import' && node.arguments.length) {
dependencies.push(node.arguments[0].value);
}
default:
return;
}
});
return dependencies;
};