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| author | 8cy <[email protected]> | 2020-04-03 02:37:42 -0700 |
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| committer | 8cy <[email protected]> | 2020-04-03 02:37:42 -0700 |
| commit | 60867fb030bae582082340ead7dbc7efdc2f5398 (patch) | |
| tree | 4c6a7356351be2e4914e15c4703172597c45656e /node_modules/node-addon-api/doc/error.md | |
| parent | commenting (diff) | |
| download | s5nical-60867fb030bae582082340ead7dbc7efdc2f5398.tar.xz s5nical-60867fb030bae582082340ead7dbc7efdc2f5398.zip | |
2020/04/03, 02:34, v1.2.0
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| -rw-r--r-- | node_modules/node-addon-api/doc/error.md | 115 |
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diff --git a/node_modules/node-addon-api/doc/error.md b/node_modules/node-addon-api/doc/error.md new file mode 100644 index 0000000..1526bdd --- /dev/null +++ b/node_modules/node-addon-api/doc/error.md @@ -0,0 +1,115 @@ +# Error + +The `Napi::Error` class is a representation of the JavaScript `Error` object that is thrown +when runtime errors occur. The Error object can also be used as a base object for +user-defined exceptions. + +The `Napi::Error` class is a persistent reference to a JavaScript error object thus +inherits its behavior from the `Napi::ObjectReference` class (for more info see: [`Napi::ObjectReference`](object_reference.md)). + +If C++ exceptions are enabled (for more info see: [Setup](setup.md)), then the +`Napi::Error` class extends `std::exception` and enables integrated +error-handling for C++ exceptions and JavaScript exceptions. + +For more details about error handling refer to the section titled [Error handling](error_handling.md). + +## Methods + +### New + +Creates empty instance of an `Napi::Error` object for the specified environment. + +```cpp +Napi::Error::New(Napi::Env env); +``` + +- `[in] env`: The environment in which to construct the `Napi::Error` object. + +Returns an instance of `Napi::Error` object. + +### New + +Creates instance of an `Napi::Error` object. + +```cpp +Napi::Error::New(Napi::Env env, const char* message); +``` + +- `[in] env`: The environment in which to construct the `Napi::Error` object. +- `[in] message`: Null-terminated string to be used as the message for the `Napi::Error`. + +Returns instance of an `Napi::Error` object. + +### New + +Creates instance of an `Napi::Error` object + +```cpp +Napi::Error::New(Napi::Env env, const std::string& message); +``` + +- `[in] env`: The environment in which to construct the `Napi::Error` object. +- `[in] message`: Reference string to be used as the message for the `Napi::Error`. + +Returns instance of an `Napi::Error` object. + +### Fatal + +In case of an unrecoverable error in a native module, a fatal error can be thrown +to immediately terminate the process. + +```cpp +static NAPI_NO_RETURN void Napi::Error::Fatal(const char* location, const char* message); +``` + +The function call does not return, the process will be terminated. + +### Constructor + +Creates empty instance of an `Napi::Error`. + +```cpp +Napi::Error::Error(); +``` + +Returns an instance of `Napi::Error` object. + +### Constructor + +Initializes an `Napi::Error` instance from an existing JavaScript error object. + +```cpp +Napi::Error::Error(napi_env env, napi_value value); +``` + +- `[in] env`: The environment in which to construct the error object. +- `[in] value`: The `Napi::Error` reference to wrap. + +Returns instance of an `Napi::Error` object. + +### Message + +```cpp +std::string& Napi::Error::Message() const NAPI_NOEXCEPT; +``` + +Returns the reference to the string that represent the message of the error. + +### ThrowAsJavaScriptException + +Throw the error as JavaScript exception. + +```cpp +void Napi::Error::ThrowAsJavaScriptException() const; +``` + +Throws the error as a JavaScript exception. + +### what + +```cpp +const char* Napi::Error::what() const NAPI_NOEXCEPT override; +``` + +Returns a pointer to a null-terminated string that is used to identify the +exception. This method can be used only if the exception mechanism is enabled. |