hunk.code_window: Expo provides various settings to configure how your app receives over-the-air (OTA) JavaScript updates. OTA updates allow you to publish a new version of your app JavaScript and assets without building a new version of your standalone app and re-submitting to app stores ([read more about the limitations](../../workflow/publishing/)).
   To perform an over-the-air update of your app, you simply run `expo publish`. If you're using release channels, specify one with `--release-channel <channel-name>` option. Please note that if you wish to update the SDK version which your app is using, you need to rebuild your app with `expo build:*` command and upload the binary file to the appropriate app store ([see the docs here](../../distribution/building-standalone-apps)).
   OTA updates are controlled by the [`updates` settings in app.json](../../workflow/configuration/#updates), which handle the initial app load, and the [Updates SDK module](../../sdk/updates/), which allows you to fetch updates asynchronously from your JS.
   ## Automatic Updates
  
hunk.labels: keep keep keep replace keep keep keep keep
hunk.after_edit: To perform an over-the-air update of your app, you simply run `expo publish`. If you're using release channels, specify one with `--release-channel <channel-name>` option. If you wish to update the SDK version of your app, or make [any of the these changes](../../workflow/publishing/#some-native-configuration-cant-be-updated-by), you'll need to rebuild your app with `expo build:*` command and upload the binary file to the appropriate app store ([see the docs here](../../distribution/building-standalone-apps)).
  
hunk.file_path: docs/pages/versions/v34.0.0/guides/configuring-ota-updates.md
hunk.type: replace
file: //  Copyright (c) Facebook, Inc. and its affiliates.
  //
  // This source code is licensed under the MIT license found in the
   // LICENSE file in the root directory of this source tree.
  
  #include <cassert>
  #include <cmath>
  #include <cstdlib>
  #include <stdexcept>
  
  #include <ABI35_0_0jsi/ABI35_0_0instrumentation.h>
  #include <ABI35_0_0jsi/ABI35_0_0jsi.h>
  
  namespace facebook {
  namespace jsi {
  
  namespace detail {
  
  void throwJSError(Runtime& rt, const char* msg) {
    throw JSError(rt, msg);
  }
  
  } // namespace detail
  
  Buffer::~Buffer() {}
  
  Value HostObject::get(Runtime&, const PropNameID&) {
    return Value();
  }
  
  void HostObject::set(Runtime& rt, const PropNameID& name, const Value&) {
    std::string msg("TypeError: Cannot assign to property '");
    msg += name.utf8(rt);
    msg += "' on HostObject with default setter";
    throw JSError(rt, msg);
  }
  
  HostObject::~HostObject() {}
  
  Runtime::~Runtime() {}
  
  Instrumentation& Runtime::instrumentation() {
    class NoInstrumentation : public Instrumentation {
      std::string getRecordedGCStats() override {
        return "";
      }
  
      Value getHeapInfo(bool) override {
        return Value::undefined();
      }
  
      void collectGarbage() override {}
  
      bool createSnapshotToFile(const std::string&, bool) override {
        return false;
      }
  
      void writeBridgeTrafficTraceToFile(const std::string&) const override {
        std::abort();
      }
  
      void writeBasicBlockProfileTraceToFile(const std::string&) const override {
        std::abort();
      }
  
      void enableSamplingProfiler() const override {
        std::abort();
      }
  
      void dumpSampledTraceToFile(const std::string&) const override {
        std::abort();
      }
  
      void dumpProfilerSymbolsToFile(const std::string&) const override {
        std::abort();
      }
    };
  
    static NoInstrumentation sharedInstance;
    return sharedInstance;
  }
  
  Pointer& Pointer::operator=(Pointer&& other) {
    if (ptr_) {
      ptr_->invalidate();
    }
    ptr_ = other.ptr_;
    other.ptr_ = nullptr;
    return *this;
  }
  
  Object Object::getPropertyAsObject(Runtime& runtime, const char* name) const {
    Value v = getProperty(runtime, name);
  
    if (!v.isObject()) {
      throw JSError(
          runtime,
          std::string("getPropertyAsObject: property '") + name +
              "' is not an Object");
    }
  
    return v.getObject(runtime);
  }
  
  Function Object::getPropertyAsFunction(Runtime& runtime, const char* name)
      const {
    Object obj = getPropertyAsObject(runtime, name);
    if (!obj.isFunction(runtime)) {
      throw JSError(
          runtime,
          std::string("getPropertyAsFunction: property '") + name +
              "' is not a Function");
    };
  
    Runtime::PointerValue* value = obj.ptr_;
    obj.ptr_ = nullptr;
    return Function(value);
  }
  
  Array Object::asArray(Runtime& runtime) const& {
    if (!isArray(runtime)) {
      throw JSError(runtime, "Object is not an array");
    }
    return getArray(runtime);
  }
  
  Array Object::asArray(Runtime& runtime) && {
    if (!isArray(runtime)) {
      throw JSError(runtime, "Object is not an array");
    }
    return std::move(*this).getArray(runtime);
  }
  
  Function Object::asFunction(Runtime& runtime) const& {
    if (!isFunction(runtime)) {
      throw JSError(runtime, "Object is not a function");
    }
    return getFunction(runtime);
  }
  
  Function Object::asFunction(Runtime& runtime) && {
    if (!isFunction(runtime)) {
      throw JSError(runtime, "Object is not a function");
    }
    return std::move(*this).getFunction(runtime);
  }
  
  Value::Value(Value&& other) : Value(other.kind_) {
    if (kind_ == BooleanKind) {
      data_.boolean = other.data_.boolean;
    } else if (kind_ == NumberKind) {
      data_.number = other.data_.number;
    } else if (kind_ >= PointerKind) {
      new (&data_.pointer) Pointer(std::move(other.data_.pointer));
    }
    // when the other's dtor runs, nothing will happen.
    other.kind_ = UndefinedKind;
  }
  
  Value::Value(Runtime& runtime, const Value& other) : Value(other.kind_) {
    // data_ is uninitialized, so use placement new to create non-POD
    // types in it.  Any other kind of initialization will call a dtor
    // first, which is incorrect.
    if (kind_ == BooleanKind) {
      data_.boolean = other.data_.boolean;
    } else if (kind_ == NumberKind) {
      data_.number = other.data_.number;
    } else if (kind_ == StringKind) {
      new (&data_.pointer) Pointer(runtime.cloneString(other.data_.pointer.ptr_));
    } else if (kind_ >= ObjectKind) {
      new (&data_.pointer) Pointer(runtime.cloneObject(other.data_.pointer.ptr_));
    }
  }
  
  Value::~Value() {
    if (kind_ >= PointerKind) {
      data_.pointer.~Pointer();
    }
  }
  
  Value Value::createFromJsonUtf8(
      Runtime& runtime,
      const uint8_t* json,
      size_t length) {
    Function parseJson = runtime.global()
                             .getPropertyAsObject(runtime, "JSON")
                             .getPropertyAsFunction(runtime, "parse");
    return parseJson.call(runtime, String::createFromUtf8(runtime, json, length));
  }
  
  bool Value::strictEquals(Runtime& runtime, const Value& a, const Value& b) {
    if (a.kind_ != b.kind_) {
      return false;
    }
    switch (a.kind_) {
      case UndefinedKind:
      case NullKind:
        return true;
      case BooleanKind:
        return a.data_.boolean == b.data_.boolean;
      case NumberKind:
        return a.data_.number == b.data_.number;
      case StringKind:
        return runtime.strictEquals(
            static_cast<const String&>(a.data_.pointer),
            static_cast<const String&>(b.data_.pointer));
      case ObjectKind:
        return runtime.strictEquals(
            static_cast<const Object&>(a.data_.pointer),
            static_cast<const Object&>(b.data_.pointer));
    }
    return false;
  }
  
  double Value::asNumber() const {
    if (!isNumber()) {
      throw JSINativeException("Value is not an Object");
    }
  
    return getNumber();
  }
  
  Object Value::asObject(Runtime& runtime) const& {
    if (!isObject()) {
      throw JSError(runtime, "Value is not an Object");
    }
  
    return getObject(runtime);
  }
  
  Object Value::asObject(Runtime& rt) && {
    if (!isObject()) {
      throw JSError(rt, "Value is not an Object");
    }
    auto ptr = data_.pointer.ptr_;
    data_.pointer.ptr_ = nullptr;
    return static_cast<Object>(ptr);
  }
  
  String Value::asString(Runtime& rt) const& {
    if (!isString()) {
      throw JSError(rt, "Value is not a String");
    }
  
    return getString(rt);
  }
  
  String Value::asString(Runtime& rt) && {
    if (!isString()) {
      throw JSError(rt, "Value is not a String");
    }
  
    return std::move(*this).getString(rt);
  }
  
  String Value::toString(Runtime& runtime) const {
    Function toString = runtime.global().getPropertyAsFunction(runtime, "String");
    return toString.call(runtime, *this).getString(runtime);
  }
  
  Array Array::createWithElements(
      Runtime& rt,
      std::initializer_list<Value> elements) {
    Array result(rt, elements.size());
    size_t index = 0;
    for (const auto& element : elements) {
      result.setValueAtIndex(rt, index++, element);
    }
    return result;
  }
  
  std::vector<PropNameID> HostObject::getPropertyNames(Runtime&) {
    return {};
  }
  
  Runtime::ScopeState* Runtime::pushScope() {
    return nullptr;
  }
  
  void Runtime::popScope(ScopeState*) {}
  
  JSError::JSError(Runtime& rt, Value&& value) {
    setValue(rt, std::move(value));
  }
  
  JSError::JSError(Runtime& rt, std::string msg) : message_(std::move(msg)) {
    try {
      setValue(
          rt, rt.global().getPropertyAsFunction(rt, "Error").call(rt, message_));
    } catch (...) {
      setValue(rt, Value());
    }
  }
  
  JSError::JSError(Runtime& rt, std::string msg, std::string stack)
      : message_(std::move(msg)), stack_(std::move(stack)) {
    try {
      Object e(rt);
      e.setProperty(rt, "message", String::createFromUtf8(rt, message_));
      e.setProperty(rt, "stack", String::createFromUtf8(rt, stack_));
      setValue(rt, std::move(e));
    } catch (...) {
      setValue(rt, Value());
    }
  }
  
  JSError::JSError(std::string what, Runtime& rt, Value&& value)
      : JSIException(std::move(what)) {
    setValue(rt, std::move(value));
  }
  
  void JSError::setValue(Runtime& rt, Value&& value) {
    value_ = std::make_shared<jsi::Value>(std::move(value));
  
    try {
      if ((message_.empty() || stack_.empty()) && value_->isObject()) {
        auto obj = value_->getObject(rt);
  
        if (message_.empty()) {
          jsi::Value message = obj.getProperty(rt, "message");
          if (!message.isUndefined()) {
            message_ = message.toString(rt).utf8(rt);
          }
        }
  
        if (stack_.empty()) {
          jsi::Value stack = obj.getProperty(rt, "stack");
          if (!stack.isUndefined()) {
            stack_ = stack.toString(rt).utf8(rt);
          }
        }
      }
  
      if (message_.empty()) {
        message_ = value_->toString(rt).utf8(rt);
      }
  
      if (stack_.empty()) {
        stack_ = "no stack";
      }
  
      if (what_.empty()) {
        what_ = message_ + "\n\n" + stack_;
      }
    } catch (...) {
      message_ = "[Exception caught creating message string]";
      stack_ = "[Exception caught creating stack string]";
      what_ = "[Exception caught getting value fields]";
    }
  }
  
  } // namespace jsi
  } // namespace facebook
  