reactjs - 将 opencv4nodejs 导入 React App.js 会引发 TypeError

Question

我正在尝试在我的 React 应用程序中使用 opencv4nodejs 模块。

具有 12 个 CPU 的 Ubuntu 18.04.3 LTS

当我安装在我的应用程序目录中时，我有一个看似成功的自动构建

npm install --save opencv4nodejs

opencv 模块确实已添加到我的 node_modules 文件夹中，并且“opencv4nodejs”已正确添加到我的 package.json 文件中，作为我的 React 应用程序中的依赖项（使用 create-react-app@3.0.1 创建）

但是，如果我尝试将模块导入我的 App.js 文件，则会引发 TypeError。

import cv from "opencv4nodejs";

整个错误输出附加TypeErrorOpenCV.txt

TypeError: Cannot read property '_handle' of undefined


(anonymous function)
  1 | module.exports = function (blocking) {
  2 |   [process.stdout, process.stderr].forEach(function (stream) {
> 3 |     if (stream._handle && stream.isTTY && typeof stream._handle.setBlocking === 'function') {
  4 |       stream._handle.setBlocking(blocking);
  5 |     }
  6 |   });

自动构建文件的完整终端输出为 opencvAutoBuildTerminalOutput.txt和 更多AutoBuildOpenCVtermoutput.txt

这是 Autobuild 完成期间结束的 WARN 行。

npm WARN @typescript-eslint/eslint-plugin@1.13.0 requires a peer of eslint@^5.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN @typescript-eslint/parser@1.13.0 requires a peer of eslint@^5.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN bootstrap@4.3.1 requires a peer of jquery@1.9.1 - 3 but none is installed. You must install peer dependencies yourself.
npm WARN bootstrap@4.3.1 requires a peer of popper.js@^1.14.7 but none is installed. You must install peer dependencies yourself.
npm WARN ts-pnp@1.1.2 requires a peer of typescript@* but none is installed. You must install peer dependencies yourself.
npm WARN tsutils@3.17.1 requires a peer of typescript@>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules/jest-haste-map/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@2.0.7 (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.0.7: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

我尝试通过将这些添加到 package.json 中的依赖项来自己安装对等依赖项，但是这给 eslint 带来了问题，因为实际上安装了一个 eslint，但不知何故未被识别。缺少对等依赖项是否会导致我的错误？

以下是 AutoBuild 输出中包含字符串“Fail”的行。

-- Performing Test HAVE_CXX_WMISSING_PROTOTYPES - Failed
-- Performing Test HAVE_CXX_WSTRICT_PROTOTYPES - Failed
-- Performing Test HAVE_C_WSIGN_PROMO - Failed
-- Performing Test HAVE_C_WNO_DELETE_NON_VIRTUAL_DTOR - Failed
-- Performing Test HAVE_CXX_WNO_UNNAMED_TYPE_TEMPLATE_ARGS - Failed
-- Performing Test HAVE_C_WNO_UNNAMED_TYPE_TEMPLATE_ARGS - Failed
-- Performing Test HAVE_C_FVISIBILITY_INLINES_HIDDEN - Failed
-- Performing Test HAVE_C_WNO_ABSOLUTE_VALUE - Failed
-- Performing Test HAVE_CXX_WNO_MISSING_PROTOTYPES - Failed
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_UNDEFINED_COMPARE - Failed
-- Performing Test HAVE_CXX_WNO_SHORTEN_64_TO_32 - Failed
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE_SWITCH - Failed
-- Performing Test HAVE_CXX_WNO_INCONSISTENT_MISSING_OVERRIDE - Failed
-- Failed to find installed gflags CMake configuration, searching for gflags build directories exported with CMake.
-- Failed to find gflags - Failed to find an installed/exported CMake configuration for gflags, will perform search for installed gflags components.
-- Failed to find gflags - Could not find gflags include directory, set GFLAGS_INCLUDE_DIR to directory containing gflags/gflags.h
-- Failed to find glog - Could not find glog include directory, set GLOG_INCLUDE_DIR to directory containing glog/logging.h

这是包含“未找到”的 Autobuild 行

-- Looking for ccache - not found
-- Looking for linux/videodev.h - not found
-- Looking for sys/videoio.h - not found
-- Module opencv_ovis disabled because OGRE3D was not found
-- Module opencv_sfm disabled because the following dependencies are not found: Glog/Gflags

这是来自 AutoBuild 的一般信息

-- General configuration for OpenCV 3.4.6 =====================================
--   Version control:               3.4.6
--
--   Extra modules:
--     Location (extra):            /home/nicole/Documents/sdspage/canvas-app/node_modules/opencv-build/opencv/opencv_contrib/modules
--     Version control (extra):     3.4.6
--
--   Platform:
--     Timestamp:                   2019-09-07T17:27:04Z
--     Host:                        Linux 5.0.0-27-generic x86_64
--     CMake:                       3.10.2
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               Release
--
--   CPU/HW features:
--     Baseline:                    SSE SSE2 SSE3
--       requested:                 SSE3
--     Dispatched code generation:  SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
--       requested:                 SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
--       SSE4_1 (12 files):         + SSSE3 SSE4_1
--       SSE4_2 (1 files):          + SSSE3 SSE4_1 POPCNT SSE4_2
--       FP16 (0 files):            + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
--       AVX (5 files):             + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
--       AVX2 (26 files):           + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
--       AVX512_SKX (2 files):      + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_SKX
--
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++11:                       YES
--     C++ Compiler:                /usr/bin/c++  (ver 7.4.0)

标签： reactjsimportpeer-dependenciesopencv4nodejs