【mac降级node从18.3 - 16 -14处理了一下项目安装依赖失败的问题】

1. 入职拉取项目代码 使用tnpm i安装依赖，出现一堆报错

截图忘记了

大概的报错是error: no template named 'remove_cv_t' in namespace 'std'; did you mean 'remove_cv'?

 

../src/libsass/src/ast.hpp:1614:25: warning: loop variable 'numerator' of type 'const std::__1::basic_string<char>' creates a copy from type 'const std::__1::basic_string<char>' [-Wrange-loop-analysis]
        for (const auto numerator : numerators)
                        ^
../src/libsass/src/ast.hpp:1614:14: note: use reference type 'const std::__1::basic_string<char> &' to prevent copying
        for (const auto numerator : numerators)
             ^~~~~~~~~~~~~~~~~~~~~~
                        &
../src/libsass/src/ast.hpp:1616:25: warning: loop variable 'denominator' of type 'const std::__1::basic_string<char>' creates a copy from type 'const std::__1::basic_string<char>' [-Wrange-loop-analysis]
        for (const auto denominator : denominators)
                        ^
../src/libsass/src/ast.hpp:1616:14: note: use reference type 'const std::__1::basic_string<char> &' to prevent copying
        for (const auto denominator : denominators)
             ^~~~~~~~~~~~~~~~~~~~~~~~
                        &
2 warnings generated.
  rm -f Release/sass.a && ./gyp-mac-tool filter-libtool libtool  -static -o Release/sass.a Release/obj.target/libsass/src/libsass/src/ast.o Release/obj.target/libsass/src/libsass/src/ast_fwd_decl.o Release/obj.target/libsass/src/libsass/src/backtrace.o Release/obj.target/libsass/src/libsass/src/base64vlq.o Release/obj.target/libsass/src/libsass/src/bind.o Release/obj.target/libsass/src/libsass/src/cencode.o Release/obj.target/libsass/src/libsass/src/check_nesting.o Release/obj.target/libsass/src/libsass/src/color_maps.o Release/obj.target/libsass/src/libsass/src/constants.o Release/obj.target/libsass/src/libsass/src/context.o Release/obj.target/libsass/src/libsass/src/cssize.o Release/obj.target/libsass/src/libsass/src/emitter.o Release/obj.target/libsass/src/libsass/src/environment.o Release/obj.target/libsass/src/libsass/src/error_handling.o Release/obj.target/libsass/src/libsass/src/eval.o Release/obj.target/libsass/src/libsass/src/expand.o Release/obj.target/libsass/src/libsass/src/extend.o Release/obj.target/libsass/src/libsass/src/file.o Release/obj.target/libsass/src/libsass/src/functions.o Release/obj.target/libsass/src/libsass/src/inspect.o Release/obj.target/libsass/src/libsass/src/json.o Release/obj.target/libsass/src/libsass/src/lexer.o Release/obj.target/libsass/src/libsass/src/listize.o Release/obj.target/libsass/src/libsass/src/memory/SharedPtr.o Release/obj.target/libsass/src/libsass/src/node.o Release/obj.target/libsass/src/libsass/src/operators.o Release/obj.target/libsass/src/libsass/src/output.o Release/obj.target/libsass/src/libsass/src/parser.o Release/obj.target/libsass/src/libsass/src/plugins.o Release/obj.target/libsass/src/libsass/src/position.o Release/obj.target/libsass/src/libsass/src/prelexer.o Release/obj.target/libsass/src/libsass/src/remove_placeholders.o Release/obj.target/libsass/src/libsass/src/sass.o Release/obj.target/libsass/src/libsass/src/sass2scss.o Release/obj.target/libsass/src/libsass/src/sass_context.o Release/obj.target/libsass/src/libsass/src/sass_functions.o Release/obj.target/libsass/src/libsass/src/sass_util.o Release/obj.target/libsass/src/libsass/src/sass_values.o Release/obj.target/libsass/src/libsass/src/source_map.o Release/obj.target/libsass/src/libsass/src/subset_map.o Release/obj.target/libsass/src/libsass/src/to_c.o Release/obj.target/libsass/src/libsass/src/to_value.o Release/obj.target/libsass/src/libsass/src/units.o Release/obj.target/libsass/src/libsass/src/utf8_string.o Release/obj.target/libsass/src/libsass/src/util.o Release/obj.target/libsass/src/libsass/src/values.o
  c++ '-DNODE_GYP_MODULE_NAME=binding' '-DUSING_UV_SHARED=1' '-DUSING_V8_SHARED=1' '-DV8_DEPRECATION_WARNINGS=1' '-DV8_DEPRECATION_WARNINGS' '-DV8_IMMINENT_DEPRECATION_WARNINGS' '-D_GLIBCXX_USE_CXX11_ABI=1' '-D_DARWIN_USE_64_BIT_INODE=1' '-D_LARGEFILE_SOURCE' '-D_FILE_OFFSET_BITS=64' '-DBUILDING_NODE_EXTENSION' -I/Users/st/.node-gyp/16.0.0/include/node -I/Users/st/.node-gyp/16.0.0/src -I/Users/st/.node-gyp/16.0.0/deps/openssl/config -I/Users/st/.node-gyp/16.0.0/deps/openssl/openssl/include -I/Users/st/.node-gyp/16.0.0/deps/uv/include -I/Users/st/.node-gyp/16.0.0/deps/zlib -I/Users/st/.node-gyp/16.0.0/deps/v8/include -I../../nan -I../src/libsass/include  -O3 -gdwarf-2 -mmacosx-version-min=10.7 -arch x86_64 -Wall -Wendif-labels -W -Wno-unused-parameter -std=c++11 -stdlib=libc++ -fno-rtti -fno-exceptions -fno-strict-aliasing -MMD -MF ./Release/.deps/Release/obj.target/binding/src/binding.o.d.raw   -c -o Release/obj.target/binding/src/binding.o ../src/binding.cpp
In file included from ../src/binding.cpp:1:
In file included from ../../nan/nan.h:56:
In file included from /Users/st/.node-gyp/16.0.0/include/node/node.h:63:
In file included from /Users/st/.node-gyp/16.0.0/include/node/v8.h:30:
/Users/st/.node-gyp/16.0.0/include/node/v8-internal.h:452:38: error: no template named 'remove_cv_t' in namespace 'std'; did you mean 'remove_cv'?
            !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
                                ~~~~~^~~~~~~~~~~
                                     remove_cv
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/type_traits:697:50: note: 'remove_cv' declared here
template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_cv
                                                 ^
1 error generated.
make: *** [Release/obj.target/binding/src/binding.o] Error 1
gyp ERR! build error 
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/Users/st/rails/myapp/node_modules/node-gyp/lib/build.js:262:23)
gyp ERR! stack     at ChildProcess.emit (node:events:365:28)

 

2. 查了一堆答案都没能解决，最终在这里找到类似的  https://stackoverflow.com/questions/67241196/error-no-template-named-remove-cv-t-in-namespace-std-did-you-mean-remove

大概的原因是说node-sass不支持node16以上的版本

 

2. 第一次尝试 重新安装node-sass 东西巨多 等了巨久 就不搞了

3.换个思路 降级node到16版本

　　下面都是踩坑记录， 每一步都是血泪啊

　　3.1 mac安装nvm     https://www.jianshu.com/p/622ad36ee020

　　　　 curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.8/install.sh | bash 

　　　　安装完成后关闭终端，重新打开终端输入 nvm 验证一下是否安装成功，当出现“Node Version Manager”时，说明已安装成功。

　　　　如果在新的终端输入 nvm 时提示：command not found: nvm，有可能是以下原因之一：

　　　　3.1.1 你的系统可能缺少一个 .bash_profile 文件，你可以创建一个此文件（可通过vi或vim命令），打开复制粘贴以下代码（安装nvm成功后终端的最好3行代码）进去，保存，然后再次运行安装命令；

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion

你可能需要重新打开一个 terminal 窗口或标签页

　　　　3.1.3 如果上面没有解决问题，打开你的 .bash_profile 文件，并添加以下代码：source ~/.bashrc     更改完记得保存更改哦

　　3.2 然后nvm install 对应的node 16版本， 安装完成后切换使用node16

　　3.3 进入vs code 跑tnpm i, 结果还是报错 安装依赖不成功， 检查一下vscode,发现他的node版本还是今天最新的v18，在vs code环境下nvm use v16, nvm ls看node确实变成了16， 但是关闭vs code后再打开， 发现又变回了18版本。然后通过https://blog.csdn.net/qq_40028324/article/details/123782891解决mac vscode终端node版本与系统node版本不一致问题。

　　　　然后关闭终端 再打开 即可解决

　　3.4 再次跑tnpm i 安装依赖还是不成功 还是一样的报错， 决定继续降级node到14版本 。 按照上面的步骤降级到

v14.19.3 最终成功了 撒花花！