Current Dev State

static/js/ketcher2/node_modules/detective/index.js

@@ -0,0 +1,71 @@
+var acorn = require('acorn');
+var walk = require('acorn/dist/walk');
+var defined = require('defined');
+
+var requireRe = /\brequire\b/;
+
+function parse (src, opts) {
+    if (!opts) opts = {};
+    return acorn.parse(src, {
+        ecmaVersion: defined(opts.ecmaVersion, 8),
+        sourceType: opts.sourceType,
+        ranges: defined(opts.ranges, opts.range),
+        locations: defined(opts.locations, opts.loc),
+        allowReserved: defined(opts.allowReserved, true),
+        allowReturnOutsideFunction: defined(
+            opts.allowReturnOutsideFunction, true
+        ),
+        allowHashBang: defined(opts.allowHashBang, true)
+    });
+}
+
+var exports = module.exports = function (src, opts) {
+    return exports.find(src, opts).strings;
+};
+
+exports.find = function (src, opts) {
+    if (!opts) opts = {};
+    
+    var word = opts.word === undefined ? 'require' : opts.word;
+    if (typeof src !== 'string') src = String(src);
+    
+    var isRequire = opts.isRequire || function (node) {
+        return node.callee.type === 'Identifier'
+            && node.callee.name === word
+        ;
+    };
+    
+    var modules = { strings : [], expressions : [] };
+    if (opts.nodes) modules.nodes = [];
+    
+    var wordRe = word === 'require' ? requireRe : RegExp('\\b' + word + '\\b');
+    if (!wordRe.test(src)) return modules;
+    
+    var ast = parse(src, opts.parse);
+    
+    function visit(node, st, c) {
+        var hasRequire = wordRe.test(src.slice(node.start, node.end));
+        if (!hasRequire) return;
+        walk.base[node.type](node, st, c);
+        if (node.type !== 'CallExpression') return;
+        if (isRequire(node)) {
+            if (node.arguments.length) {
+                var arg = node.arguments[0];
+                if (arg.type === 'Literal') {
+                    modules.strings.push(arg.value);
+                }
+                else {
+                    modules.expressions.push(src.slice(arg.start, arg.end));
+                }
+            }
+            if (opts.nodes) modules.nodes.push(node);
+        }
+    }
+    
+    walk.recursive(ast, null, {
+        Statement: visit,
+        Expression: visit
+    });
+    
+    return modules;
+};