node fixes, updates

1 files changed, 100 insertions, 0 deletions

diff --git a/node_modules/babel-plugin-minify-replace/lib/index.js b/node_modules/babel-plugin-minify-replace/lib/index.js
new file mode 100644
index 00000000..afc88a25
--- /dev/null
+++ b/node_modules/babel-plugin-minify-replace/lib/index.js
@@ -0,0 +1,100 @@
+"use strict";
+
+module.exports = ({
+  types: t
+}) => {
+  const NO_MEMBER = Symbol("no member");
+  const replaceVisitor = {
+    ReferencedIdentifier(path) {
+      const _path = path,
+            node = _path.node;
+      const optionsMap = this.replacements[node.name];
+
+      if (!optionsMap) {
+        return;
+      }
+
+      let options;
+
+      if (path.parentPath.isMemberExpression({
+        object: node
+      })) {
+        const property = path.parent.property;
+        const key = t.isIdentifier(property) && property.name;
+
+        if (typeof key === "string") {
+          options = optionsMap[key];
+          path = path.parentPath;
+        }
+      }
+
+      if (!options) {
+        options = optionsMap[NO_MEMBER];
+      }
+
+      if (!options) {
+        return;
+      }
+
+      path.replaceWith(options.node);
+    }
+
+  };
+  return {
+    name: "minify-replace",
+    visitor: {
+      Program(path) {
+        /**
+           Replacements is an array of objects like this:
+           {
+             identifierName: 'console',
+             member: 'log', // optional
+             replacement: {
+               type: 'identifier',
+               value: '',
+             },
+           }
+        **/
+        if (!this.opts.replacements) {
+          // No replacements. Bail.
+          return;
+        }
+
+        const map = Object.create(null);
+        this.opts.replacements.forEach(({
+          identifierName,
+          replacement,
+          member
+        }) => {
+          if (path.scope.globals[identifierName]) {
+            // Convert to a node, we only allow identifiers and literals as replacements
+            if (!replacement.type.match(/literal|identifier/i)) {
+              throw new Error("Only literals and identifier are supported as replacements");
+            }
+
+            const node = t[replacement.type](replacement.value);
+            const options = {
+              identifierName,
+              node,
+              member
+            };
+
+            if (!map[identifierName]) {
+              map[identifierName] = {};
+            }
+
+            if (member && map[identifierName][member]) {
+              throw new Error(`Replacement collision ${identifierName}.${member}`);
+            }
+
+            map[identifierName][member || NO_MEMBER] = options;
+          }
+        });
+        path.traverse(replaceVisitor, {
+          replacements: map
+        });
+      }
+
+    }
+  };
+};
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