1 files changed, 133 insertions, 0 deletions

diff --git a/node_modules/@webassemblyjs/wasm-edit/lib/index.js b/node_modules/@webassemblyjs/wasm-edit/lib/index.js
new file mode 100644
index 0000000..3f9b295
--- /dev/null
+++ b/node_modules/@webassemblyjs/wasm-edit/lib/index.js
@@ -0,0 +1,133 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.edit = edit;
+exports.editWithAST = editWithAST;
+exports.add = add;
+exports.addWithAST = addWithAST;
+
+var _wasmParser = require("@webassemblyjs/wasm-parser");
+
+var _ast = require("@webassemblyjs/ast");
+
+var _clone = require("@webassemblyjs/ast/lib/clone");
+
+var _wasmOpt = require("@webassemblyjs/wasm-opt");
+
+var _helperWasmBytecode = _interopRequireWildcard(require("@webassemblyjs/helper-wasm-bytecode"));
+
+var _apply = require("./apply");
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
+
+function hashNode(node) {
+  return JSON.stringify(node);
+}
+
+function preprocess(ab) {
+  var optBin = (0, _wasmOpt.shrinkPaddedLEB128)(new Uint8Array(ab));
+  return optBin.buffer;
+}
+
+function sortBySectionOrder(nodes) {
+  var originalOrder = new Map();
+  var _iteratorNormalCompletion = true;
+  var _didIteratorError = false;
+  var _iteratorError = undefined;
+
+  try {
+    for (var _iterator = nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+      var _node = _step.value;
+      originalOrder.set(_node, originalOrder.size);
+    }
+  } catch (err) {
+    _didIteratorError = true;
+    _iteratorError = err;
+  } finally {
+    try {
+      if (!_iteratorNormalCompletion && _iterator.return != null) {
+        _iterator.return();
+      }
+    } finally {
+      if (_didIteratorError) {
+        throw _iteratorError;
+      }
+    }
+  }
+
+  nodes.sort(function (a, b) {
+    var sectionA = (0, _helperWasmBytecode.getSectionForNode)(a);
+    var sectionB = (0, _helperWasmBytecode.getSectionForNode)(b);
+    var aId = _helperWasmBytecode.default.sections[sectionA];
+    var bId = _helperWasmBytecode.default.sections[sectionB];
+
+    if (typeof aId !== "number" || typeof bId !== "number") {
+      throw new Error("Section id not found");
+    }
+
+    if (aId === bId) {
+      // $FlowIgnore originalOrder is filled for all nodes
+      return originalOrder.get(a) - originalOrder.get(b);
+    }
+
+    return aId - bId;
+  });
+}
+
+function edit(ab, visitors) {
+  ab = preprocess(ab);
+  var ast = (0, _wasmParser.decode)(ab);
+  return editWithAST(ast, ab, visitors);
+}
+
+function editWithAST(ast, ab, visitors) {
+  var operations = [];
+  var uint8Buffer = new Uint8Array(ab);
+  var nodeBefore;
+
+  function before(type, path) {
+    nodeBefore = (0, _clone.cloneNode)(path.node);
+  }
+
+  function after(type, path) {
+    if (path.node._deleted === true) {
+      operations.push({
+        kind: "delete",
+        node: path.node
+      }); // $FlowIgnore
+    } else if (hashNode(nodeBefore) !== hashNode(path.node)) {
+      operations.push({
+        kind: "update",
+        oldNode: nodeBefore,
+        node: path.node
+      });
+    }
+  }
+
+  (0, _ast.traverse)(ast, visitors, before, after);
+  uint8Buffer = (0, _apply.applyOperations)(ast, uint8Buffer, operations);
+  return uint8Buffer.buffer;
+}
+
+function add(ab, newNodes) {
+  ab = preprocess(ab);
+  var ast = (0, _wasmParser.decode)(ab);
+  return addWithAST(ast, ab, newNodes);
+}
+
+function addWithAST(ast, ab, newNodes) {
+  // Sort nodes by insertion order
+  sortBySectionOrder(newNodes);
+  var uint8Buffer = new Uint8Array(ab); // Map node into operations
+
+  var operations = newNodes.map(function (n) {
+    return {
+      kind: "add",
+      node: n
+    };
+  });
+  uint8Buffer = (0, _apply.applyOperations)(ast, uint8Buffer, operations);
+  return uint8Buffer.buffer;
+}
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