7 files changed, 1029 insertions, 0 deletions
diff --git a/node_modules/@webassemblyjs/wasm-edit/LICENSE b/node_modules/@webassemblyjs/wasm-edit/LICENSE
new file mode 100644
index 0000000..87e7e1f
--- /dev/null
+++ b/node_modules/@webassemblyjs/wasm-edit/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Sven Sauleau <sven@sauleau.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/node_modules/@webassemblyjs/wasm-edit/README.md b/node_modules/@webassemblyjs/wasm-edit/README.md
new file mode 100644
index 0000000..f03462f
--- /dev/null
+++ b/node_modules/@webassemblyjs/wasm-edit/README.md
@@ -0,0 +1,86 @@
+# @webassemblyjs/wasm-edit
+
+> Rewrite a WASM binary
+
+Replace in-place an AST node in the binary.
+
+## Installation
+
+```sh
+yarn add @webassemblyjs/wasm-edit
+```
+
+## Usage
+
+Update:
+
+```js
+import { edit } from "@webassemblyjs/wasm-edit";
+
+const binary = [/*...*/];
+
+const visitors = {
+  ModuleImport({ node }) {
+    node.module = "foo";
+    node.name = "bar";
+  }
+};
+
+const newBinary = edit(binary, visitors);
+```
+
+Replace:
+
+```js
+import { edit } from "@webassemblyjs/wasm-edit";
+
+const binary = [/*...*/];
+
+const visitors = {
+  Instr(path) {
+    const newNode = t.callInstruction(t.indexLiteral(0));
+    path.replaceWith(newNode);
+  }
+};
+
+const newBinary = edit(binary, visitors);
+```
+
+Remove:
+
+```js
+import { edit } from "@webassemblyjs/wasm-edit";
+
+const binary = [/*...*/];
+
+const visitors = {
+  ModuleExport({ node }) {
+    path.remove()
+  }
+};
+
+const newBinary = edit(binary, visitors);
+```
+
+Insert:
+
+```js
+import { add } from "@webassemblyjs/wasm-edit";
+
+const binary = [/*...*/];
+
+const newBinary = add(actualBinary, [
+  t.moduleImport("env", "mem", t.memory(t.limit(1)))
+]);
+```
+
+## Providing the AST
+
+Providing an AST allows you to handle the decoding yourself, here is the API:
+
+```js
+addWithAST(Program, ArrayBuffer, Array<Node>): ArrayBuffer;
+editWithAST(Program, ArrayBuffer, visitors): ArrayBuffer;
+```
+
+Note that the AST will be updated in-place.
diff --git a/node_modules/@webassemblyjs/wasm-edit/esm/apply.js b/node_modules/@webassemblyjs/wasm-edit/esm/apply.js
new file mode 100644
index 0000000..4c21569
--- /dev/null
+++ b/node_modules/@webassemblyjs/wasm-edit/esm/apply.js
@@ -0,0 +1,299 @@
+function _sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
+
+function _slicedToArray(arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return _sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }
+
+import { encodeNode } from "@webassemblyjs/wasm-gen";
+import { encodeU32 } from "@webassemblyjs/wasm-gen/lib/encoder";
+import { isFunc, isGlobal, assertHasLoc, orderedInsertNode, getSectionMetadata, traverse, getEndOfSection } from "@webassemblyjs/ast";
+import { resizeSectionByteSize, resizeSectionVecSize, createEmptySection, removeSections } from "@webassemblyjs/helper-wasm-section";
+import { overrideBytesInBuffer } from "@webassemblyjs/helper-buffer";
+import { getSectionForNode } from "@webassemblyjs/helper-wasm-bytecode";
+
+function shiftLocNodeByDelta(node, delta) {
+  assertHasLoc(node); // $FlowIgnore: assertHasLoc ensures that
+
+  node.loc.start.column += delta; // $FlowIgnore: assertHasLoc ensures that
+
+  node.loc.end.column += delta;
+}
+
+function applyUpdate(ast, uint8Buffer, _ref) {
+  var _ref2 = _slicedToArray(_ref, 2),
+      oldNode = _ref2[0],
+      newNode = _ref2[1];
+
+  var deltaElements = 0;
+  assertHasLoc(oldNode);
+  var sectionName = getSectionForNode(newNode);
+  var replacementByteArray = encodeNode(newNode);
+  /**
+   * Replace new node as bytes
+   */
+
+  uint8Buffer = overrideBytesInBuffer(uint8Buffer, // $FlowIgnore: assertHasLoc ensures that
+  oldNode.loc.start.column, // $FlowIgnore: assertHasLoc ensures that
+  oldNode.loc.end.column, replacementByteArray);
+  /**
+   * Update function body size if needed
+   */
+
+  if (sectionName === "code") {
+    // Find the parent func
+    traverse(ast, {
+      Func: function Func(_ref3) {
+        var node = _ref3.node;
+        var funcHasThisIntr = node.body.find(function (n) {
+          return n === newNode;
+        }) !== undefined; // Update func's body size if needed
+
+        if (funcHasThisIntr === true) {
+          // These are the old functions locations informations
+          assertHasLoc(node);
+          var oldNodeSize = encodeNode(oldNode).length;
+          var bodySizeDeltaBytes = replacementByteArray.length - oldNodeSize;
+
+          if (bodySizeDeltaBytes !== 0) {
+            var newValue = node.metadata.bodySize + bodySizeDeltaBytes;
+            var newByteArray = encodeU32(newValue); // function body size byte
+            // FIXME(sven): only handles one byte u32
+
+            var start = node.loc.start.column;
+            var end = start + 1;
+            uint8Buffer = overrideBytesInBuffer(uint8Buffer, start, end, newByteArray);
+          }
+        }
+      }
+    });
+  }
+  /**
+   * Update section size
+   */
+
+
+  var deltaBytes = replacementByteArray.length - ( // $FlowIgnore: assertHasLoc ensures that
+  oldNode.loc.end.column - oldNode.loc.start.column); // Init location informations
+
+  newNode.loc = {
+    start: {
+      line: -1,
+      column: -1
+    },
+    end: {
+      line: -1,
+      column: -1
+    }
+  }; // Update new node end position
+  // $FlowIgnore: assertHasLoc ensures that
+
+  newNode.loc.start.column = oldNode.loc.start.column; // $FlowIgnore: assertHasLoc ensures that
+
+  newNode.loc.end.column = // $FlowIgnore: assertHasLoc ensures that
+  oldNode.loc.start.column + replacementByteArray.length;
+  return {
+    uint8Buffer: uint8Buffer,
+    deltaBytes: deltaBytes,
+    deltaElements: deltaElements
+  };
+}
+
+function applyDelete(ast, uint8Buffer, node) {
+  var deltaElements = -1; // since we removed an element
+
+  assertHasLoc(node);
+  var sectionName = getSectionForNode(node);
+
+  if (sectionName === "start") {
+    var sectionMetadata = getSectionMetadata(ast, "start");
+    /**
+     * The start section only contains one element,
+     * we need to remove the whole section
+     */
+
+    uint8Buffer = removeSections(ast, uint8Buffer, "start");
+
+    var _deltaBytes = -(sectionMetadata.size.value + 1);
+    /* section id */
+
+
+    return {
+      uint8Buffer: uint8Buffer,
+      deltaBytes: _deltaBytes,
+      deltaElements: deltaElements
+    };
+  } // replacement is nothing
+
+
+  var replacement = [];
+  uint8Buffer = overrideBytesInBuffer(uint8Buffer, // $FlowIgnore: assertHasLoc ensures that
+  node.loc.start.column, // $FlowIgnore: assertHasLoc ensures that
+  node.loc.end.column, replacement);
+  /**
+   * Update section
+   */
+  // $FlowIgnore: assertHasLoc ensures that
+
+  var deltaBytes = -(node.loc.end.column - node.loc.start.column);
+  return {
+    uint8Buffer: uint8Buffer,
+    deltaBytes: deltaBytes,
+    deltaElements: deltaElements
+  };
+}
+
+function applyAdd(ast, uint8Buffer, node) {
+  var deltaElements = +1; // since we added an element
+
+  var sectionName = getSectionForNode(node);
+  var sectionMetadata = getSectionMetadata(ast, sectionName); // Section doesn't exists, we create an empty one
+
+  if (typeof sectionMetadata === "undefined") {
+    var res = createEmptySection(ast, uint8Buffer, sectionName);
+    uint8Buffer = res.uint8Buffer;
+    sectionMetadata = res.sectionMetadata;
+  }
+  /**
+   * check that the expressions were ended
+   */
+
+
+  if (isFunc(node)) {
+    // $FlowIgnore
+    var body = node.body;
+
+    if (body.length === 0 || body[body.length - 1].id !== "end") {
+      throw new Error("expressions must be ended");
+    }
+  }
+
+  if (isGlobal(node)) {
+    // $FlowIgnore
+    var body = node.init;
+
+    if (body.length === 0 || body[body.length - 1].id !== "end") {
+      throw new Error("expressions must be ended");
+    }
+  }
+  /**
+   * Add nodes
+   */
+
+
+  var newByteArray = encodeNode(node); // The size of the section doesn't include the storage of the size itself
+  // we need to manually add it here
+
+  var start = getEndOfSection(sectionMetadata);
+  var end = start;
+  /**
+   * Update section
+   */
+
+  var deltaBytes = newByteArray.length;
+  uint8Buffer = overrideBytesInBuffer(uint8Buffer, start, end, newByteArray);
+  node.loc = {
+    start: {
+      line: -1,
+      column: start
+    },
+    end: {
+      line: -1,
+      column: start + deltaBytes
+    }
+  }; // for func add the additional metadata in the AST
+
+  if (node.type === "Func") {
+    // the size is the first byte
+    // FIXME(sven): handle LEB128 correctly here
+    var bodySize = newByteArray[0];
+    node.metadata = {
+      bodySize: bodySize
+    };
+  }
+
+  if (node.type !== "IndexInFuncSection") {
+    orderedInsertNode(ast.body[0], node);
+  }
+
+  return {
+    uint8Buffer: uint8Buffer,
+    deltaBytes: deltaBytes,
+    deltaElements: deltaElements
+  };
+}
+
+export function applyOperations(ast, uint8Buffer, ops) {
+  ops.forEach(function (op) {
+    var state;
+    var sectionName;
+
+    switch (op.kind) {
+      case "update":
+        state = applyUpdate(ast, uint8Buffer, [op.oldNode, op.node]);
+        sectionName = getSectionForNode(op.node);
+        break;
+
+      case "delete":
+        state = applyDelete(ast, uint8Buffer, op.node);
+        sectionName = getSectionForNode(op.node);
+        break;
+
+      case "add":
+        state = applyAdd(ast, uint8Buffer, op.node);
+        sectionName = getSectionForNode(op.node);
+        break;
+
+      default:
+        throw new Error("Unknown operation");
+    }
+    /**
+     * Resize section vec size.
+     * If the length of the LEB-encoded size changes, this can change
+     * the byte length of the section and the offset for nodes in the
+     * section. So we do this first before resizing section byte size
+     * or shifting following operations' nodes.
+     */
+
+
+    if (state.deltaElements !== 0 && sectionName !== "start") {
+      var oldBufferLength = state.uint8Buffer.length;
+      state.uint8Buffer = resizeSectionVecSize(ast, state.uint8Buffer, sectionName, state.deltaElements); // Infer bytes added/removed by comparing buffer lengths
+
+      state.deltaBytes += state.uint8Buffer.length - oldBufferLength;
+    }
+    /**
+     * Resize section byte size.
+     * If the length of the LEB-encoded size changes, this can change
+     * the offset for nodes in the section. So we do this before
+     * shifting following operations' nodes.
+     */
+
+
+    if (state.deltaBytes !== 0 && sectionName !== "start") {
+      var _oldBufferLength = state.uint8Buffer.length;
+      state.uint8Buffer = resizeSectionByteSize(ast, state.uint8Buffer, sectionName, state.deltaBytes); // Infer bytes added/removed by comparing buffer lengths
+
+      state.deltaBytes += state.uint8Buffer.length - _oldBufferLength;
+    }
+    /**
+     * Shift following operation's nodes
+     */
+
+
+    if (state.deltaBytes !== 0) {
+      ops.forEach(function (op) {
+        // We don't need to handle add ops, they are positioning independent
+        switch (op.kind) {
+          case "update":
+            shiftLocNodeByDelta(op.oldNode, state.deltaBytes);
+            break;
+
+          case "delete":
+            shiftLocNodeByDelta(op.node, state.deltaBytes);
+            break;
+        }
+      });
+    }
+
+    uint8Buffer = state.uint8Buffer;
+  });
+  return uint8Buffer;
+}
+\ No newline at end of file
diff --git a/node_modules/@webassemblyjs/wasm-edit/esm/index.js b/node_modules/@webassemblyjs/wasm-edit/esm/index.js
new file mode 100644
index 0000000..6ed9d53
--- /dev/null
+++ b/node_modules/@webassemblyjs/wasm-edit/esm/index.js
@@ -0,0 +1,114 @@
+import { decode } from "@webassemblyjs/wasm-parser";
+import { traverse } from "@webassemblyjs/ast";
+import { cloneNode } from "@webassemblyjs/ast/lib/clone";
+import { shrinkPaddedLEB128 } from "@webassemblyjs/wasm-opt";
+import { getSectionForNode } from "@webassemblyjs/helper-wasm-bytecode";
+import constants from "@webassemblyjs/helper-wasm-bytecode";
+import { applyOperations } from "./apply";
+
+function hashNode(node) {
+  return JSON.stringify(node);
+}
+
+function preprocess(ab) {
+  var optBin = 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 = getSectionForNode(a);
+    var sectionB = getSectionForNode(b);
+    var aId = constants.sections[sectionA];
+    var bId = constants.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;
+  });
+}
+
+export function edit(ab, visitors) {
+  ab = preprocess(ab);
+  var ast = decode(ab);
+  return editWithAST(ast, ab, visitors);
+}
+export function editWithAST(ast, ab, visitors) {
+  var operations = [];
+  var uint8Buffer = new Uint8Array(ab);
+  var nodeBefore;
+
+  function before(type, path) {
+    nodeBefore = 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
+      });
+    }
+  }
+
+  traverse(ast, visitors, before, after);
+  uint8Buffer = applyOperations(ast, uint8Buffer, operations);
+  return uint8Buffer.buffer;
+}
+export function add(ab, newNodes) {
+  ab = preprocess(ab);
+  var ast = decode(ab);
+  return addWithAST(ast, ab, newNodes);
+}
+export 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 = applyOperations(ast, uint8Buffer, operations);
+  return uint8Buffer.buffer;
+}
+\ No newline at end of file
diff --git a/node_modules/@webassemblyjs/wasm-edit/lib/apply.js b/node_modules/@webassemblyjs/wasm-edit/lib/apply.js
new file mode 100644
index 0000000..e9cb38f
--- /dev/null
+++ b/node_modules/@webassemblyjs/wasm-edit/lib/apply.js
@@ -0,0 +1,311 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.applyOperations = applyOperations;
+
+var _wasmGen = require("@webassemblyjs/wasm-gen");
+
+var _encoder = require("@webassemblyjs/wasm-gen/lib/encoder");
+
+var _ast = require("@webassemblyjs/ast");
+
+var _helperWasmSection = require("@webassemblyjs/helper-wasm-section");
+
+var _helperBuffer = require("@webassemblyjs/helper-buffer");
+
+var _helperWasmBytecode = require("@webassemblyjs/helper-wasm-bytecode");
+
+function _sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
+
+function _slicedToArray(arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return _sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }
+
+function shiftLocNodeByDelta(node, delta) {
+  (0, _ast.assertHasLoc)(node); // $FlowIgnore: assertHasLoc ensures that
+
+  node.loc.start.column += delta; // $FlowIgnore: assertHasLoc ensures that
+
+  node.loc.end.column += delta;
+}
+
+function applyUpdate(ast, uint8Buffer, _ref) {
+  var _ref2 = _slicedToArray(_ref, 2),
+      oldNode = _ref2[0],
+      newNode = _ref2[1];
+
+  var deltaElements = 0;
+  (0, _ast.assertHasLoc)(oldNode);
+  var sectionName = (0, _helperWasmBytecode.getSectionForNode)(newNode);
+  var replacementByteArray = (0, _wasmGen.encodeNode)(newNode);
+  /**
+   * Replace new node as bytes
+   */
+
+  uint8Buffer = (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, // $FlowIgnore: assertHasLoc ensures that
+  oldNode.loc.start.column, // $FlowIgnore: assertHasLoc ensures that
+  oldNode.loc.end.column, replacementByteArray);
+  /**
+   * Update function body size if needed
+   */
+
+  if (sectionName === "code") {
+    // Find the parent func
+    (0, _ast.traverse)(ast, {
+      Func: function Func(_ref3) {
+        var node = _ref3.node;
+        var funcHasThisIntr = node.body.find(function (n) {
+          return n === newNode;
+        }) !== undefined; // Update func's body size if needed
+
+        if (funcHasThisIntr === true) {
+          // These are the old functions locations informations
+          (0, _ast.assertHasLoc)(node);
+          var oldNodeSize = (0, _wasmGen.encodeNode)(oldNode).length;
+          var bodySizeDeltaBytes = replacementByteArray.length - oldNodeSize;
+
+          if (bodySizeDeltaBytes !== 0) {
+            var newValue = node.metadata.bodySize + bodySizeDeltaBytes;
+            var newByteArray = (0, _encoder.encodeU32)(newValue); // function body size byte
+            // FIXME(sven): only handles one byte u32
+
+            var start = node.loc.start.column;
+            var end = start + 1;
+            uint8Buffer = (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, start, end, newByteArray);
+          }
+        }
+      }
+    });
+  }
+  /**
+   * Update section size
+   */
+
+
+  var deltaBytes = replacementByteArray.length - ( // $FlowIgnore: assertHasLoc ensures that
+  oldNode.loc.end.column - oldNode.loc.start.column); // Init location informations
+
+  newNode.loc = {
+    start: {
+      line: -1,
+      column: -1
+    },
+    end: {
+      line: -1,
+      column: -1
+    }
+  }; // Update new node end position
+  // $FlowIgnore: assertHasLoc ensures that
+
+  newNode.loc.start.column = oldNode.loc.start.column; // $FlowIgnore: assertHasLoc ensures that
+
+  newNode.loc.end.column = // $FlowIgnore: assertHasLoc ensures that
+  oldNode.loc.start.column + replacementByteArray.length;
+  return {
+    uint8Buffer: uint8Buffer,
+    deltaBytes: deltaBytes,
+    deltaElements: deltaElements
+  };
+}
+
+function applyDelete(ast, uint8Buffer, node) {
+  var deltaElements = -1; // since we removed an element
+
+  (0, _ast.assertHasLoc)(node);
+  var sectionName = (0, _helperWasmBytecode.getSectionForNode)(node);
+
+  if (sectionName === "start") {
+    var sectionMetadata = (0, _ast.getSectionMetadata)(ast, "start");
+    /**
+     * The start section only contains one element,
+     * we need to remove the whole section
+     */
+
+    uint8Buffer = (0, _helperWasmSection.removeSections)(ast, uint8Buffer, "start");
+
+    var _deltaBytes = -(sectionMetadata.size.value + 1);
+    /* section id */
+
+
+    return {
+      uint8Buffer: uint8Buffer,
+      deltaBytes: _deltaBytes,
+      deltaElements: deltaElements
+    };
+  } // replacement is nothing
+
+
+  var replacement = [];
+  uint8Buffer = (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, // $FlowIgnore: assertHasLoc ensures that
+  node.loc.start.column, // $FlowIgnore: assertHasLoc ensures that
+  node.loc.end.column, replacement);
+  /**
+   * Update section
+   */
+  // $FlowIgnore: assertHasLoc ensures that
+
+  var deltaBytes = -(node.loc.end.column - node.loc.start.column);
+  return {
+    uint8Buffer: uint8Buffer,
+    deltaBytes: deltaBytes,
+    deltaElements: deltaElements
+  };
+}
+
+function applyAdd(ast, uint8Buffer, node) {
+  var deltaElements = +1; // since we added an element
+
+  var sectionName = (0, _helperWasmBytecode.getSectionForNode)(node);
+  var sectionMetadata = (0, _ast.getSectionMetadata)(ast, sectionName); // Section doesn't exists, we create an empty one
+
+  if (typeof sectionMetadata === "undefined") {
+    var res = (0, _helperWasmSection.createEmptySection)(ast, uint8Buffer, sectionName);
+    uint8Buffer = res.uint8Buffer;
+    sectionMetadata = res.sectionMetadata;
+  }
+  /**
+   * check that the expressions were ended
+   */
+
+
+  if ((0, _ast.isFunc)(node)) {
+    // $FlowIgnore
+    var body = node.body;
+
+    if (body.length === 0 || body[body.length - 1].id !== "end") {
+      throw new Error("expressions must be ended");
+    }
+  }
+
+  if ((0, _ast.isGlobal)(node)) {
+    // $FlowIgnore
+    var body = node.init;
+
+    if (body.length === 0 || body[body.length - 1].id !== "end") {
+      throw new Error("expressions must be ended");
+    }
+  }
+  /**
+   * Add nodes
+   */
+
+
+  var newByteArray = (0, _wasmGen.encodeNode)(node); // The size of the section doesn't include the storage of the size itself
+  // we need to manually add it here
+
+  var start = (0, _ast.getEndOfSection)(sectionMetadata);
+  var end = start;
+  /**
+   * Update section
+   */
+
+  var deltaBytes = newByteArray.length;
+  uint8Buffer = (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, start, end, newByteArray);
+  node.loc = {
+    start: {
+      line: -1,
+      column: start
+    },
+    end: {
+      line: -1,
+      column: start + deltaBytes
+    }
+  }; // for func add the additional metadata in the AST
+
+  if (node.type === "Func") {
+    // the size is the first byte
+    // FIXME(sven): handle LEB128 correctly here
+    var bodySize = newByteArray[0];
+    node.metadata = {
+      bodySize: bodySize
+    };
+  }
+
+  if (node.type !== "IndexInFuncSection") {
+    (0, _ast.orderedInsertNode)(ast.body[0], node);
+  }
+
+  return {
+    uint8Buffer: uint8Buffer,
+    deltaBytes: deltaBytes,
+    deltaElements: deltaElements
+  };
+}
+
+function applyOperations(ast, uint8Buffer, ops) {
+  ops.forEach(function (op) {
+    var state;
+    var sectionName;
+
+    switch (op.kind) {
+      case "update":
+        state = applyUpdate(ast, uint8Buffer, [op.oldNode, op.node]);
+        sectionName = (0, _helperWasmBytecode.getSectionForNode)(op.node);
+        break;
+
+      case "delete":
+        state = applyDelete(ast, uint8Buffer, op.node);
+        sectionName = (0, _helperWasmBytecode.getSectionForNode)(op.node);
+        break;
+
+      case "add":
+        state = applyAdd(ast, uint8Buffer, op.node);
+        sectionName = (0, _helperWasmBytecode.getSectionForNode)(op.node);
+        break;
+
+      default:
+        throw new Error("Unknown operation");
+    }
+    /**
+     * Resize section vec size.
+     * If the length of the LEB-encoded size changes, this can change
+     * the byte length of the section and the offset for nodes in the
+     * section. So we do this first before resizing section byte size
+     * or shifting following operations' nodes.
+     */
+
+
+    if (state.deltaElements !== 0 && sectionName !== "start") {
+      var oldBufferLength = state.uint8Buffer.length;
+      state.uint8Buffer = (0, _helperWasmSection.resizeSectionVecSize)(ast, state.uint8Buffer, sectionName, state.deltaElements); // Infer bytes added/removed by comparing buffer lengths
+
+      state.deltaBytes += state.uint8Buffer.length - oldBufferLength;
+    }
+    /**
+     * Resize section byte size.
+     * If the length of the LEB-encoded size changes, this can change
+     * the offset for nodes in the section. So we do this before
+     * shifting following operations' nodes.
+     */
+
+
+    if (state.deltaBytes !== 0 && sectionName !== "start") {
+      var _oldBufferLength = state.uint8Buffer.length;
+      state.uint8Buffer = (0, _helperWasmSection.resizeSectionByteSize)(ast, state.uint8Buffer, sectionName, state.deltaBytes); // Infer bytes added/removed by comparing buffer lengths
+
+      state.deltaBytes += state.uint8Buffer.length - _oldBufferLength;
+    }
+    /**
+     * Shift following operation's nodes
+     */
+
+
+    if (state.deltaBytes !== 0) {
+      ops.forEach(function (op) {
+        // We don't need to handle add ops, they are positioning independent
+        switch (op.kind) {
+          case "update":
+            shiftLocNodeByDelta(op.oldNode, state.deltaBytes);
+            break;
+
+          case "delete":
+            shiftLocNodeByDelta(op.node, state.deltaBytes);
+            break;
+        }
+      });
+    }
+
+    uint8Buffer = state.uint8Buffer;
+  });
+  return uint8Buffer;
+}
+\ No newline at end of file
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;
+}
+\ No newline at end of file
diff --git a/node_modules/@webassemblyjs/wasm-edit/package.json b/node_modules/@webassemblyjs/wasm-edit/package.json
new file mode 100644
index 0000000..d6d5cbc
--- /dev/null
+++ b/node_modules/@webassemblyjs/wasm-edit/package.json
@@ -0,0 +1,65 @@
+{
+  "_from": "@webassemblyjs/wasm-edit@1.9.0",
+  "_id": "@webassemblyjs/wasm-edit@1.9.0",
+  "_inBundle": false,
+  "_integrity": "sha512-FgHzBm80uwz5M8WKnMTn6j/sVbqilPdQXTWraSjBwFXSYGirpkSWE2R9Qvz9tNiTKQvoKILpCuTjBKzOIm0nxw==",
+  "_location": "/@webassemblyjs/wasm-edit",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "@webassemblyjs/wasm-edit@1.9.0",
+    "name": "@webassemblyjs/wasm-edit",
+    "escapedName": "@webassemblyjs%2fwasm-edit",
+    "scope": "@webassemblyjs",
+    "rawSpec": "1.9.0",
+    "saveSpec": null,
+    "fetchSpec": "1.9.0"
+  },
+  "_requiredBy": [
+    "/webpack"
+  ],
+  "_resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-edit/-/wasm-edit-1.9.0.tgz",
+  "_shasum": "3fe6d79d3f0f922183aa86002c42dd256cfee9cf",
+  "_spec": "@webassemblyjs/wasm-edit@1.9.0",
+  "_where": "/home/pruss/Dev/3-minute-website/node_modules/webpack",
+  "author": {
+    "name": "Sven Sauleau"
+  },
+  "bugs": {
+    "url": "https://github.com/xtuc/webassemblyjs/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "@webassemblyjs/ast": "1.9.0",
+    "@webassemblyjs/helper-buffer": "1.9.0",
+    "@webassemblyjs/helper-wasm-bytecode": "1.9.0",
+    "@webassemblyjs/helper-wasm-section": "1.9.0",
+    "@webassemblyjs/wasm-gen": "1.9.0",
+    "@webassemblyjs/wasm-opt": "1.9.0",
+    "@webassemblyjs/wasm-parser": "1.9.0",
+    "@webassemblyjs/wast-printer": "1.9.0"
+  },
+  "deprecated": false,
+  "description": "> Rewrite a WASM binary",
+  "devDependencies": {
+    "@webassemblyjs/helper-test-framework": "1.9.0"
+  },
+  "gitHead": "0440b420888c1f7701eb9762ec657775506b87d8",
+  "homepage": "https://github.com/xtuc/webassemblyjs#readme",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "module": "esm/index.js",
+  "name": "@webassemblyjs/wasm-edit",
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/xtuc/webassemblyjs.git"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "version": "1.9.0"
+}