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  • 关于nodejs的require顺序

    复制代码
    ---------------------------------------
            check /home/somebody/node_modules/othermodule
            check /home/somebody/node_modules/othermodule.js
            check /home/somebody/node_modules/othermodule.json
            check /home/somebody/node_modules/othermodule.node
    ---------------------------------------
    if /home/somebody/node_modules/othermodule/package.json exists
            check /home/somebody/node_modules/othermodule/package.json[main]
    ---------------------------------------
    if /home/somebody/node_modules/othermodule/index.js exists
            check /home/somebody/node_modules/othermodule/index.js
    ---------------------------------------
    if /home/somebody/node_modules/othermodule/index.node exists
            check /home/somebody/node_modules/othermodule/index.node
    ---------------------------------------
            check /home/node_modules/othermodule
            check /home/node_modules/othermodule.js
            check /home/node_modules/othermodule.json
            check /home/node_modules/othermodule.node
    ---------------------------------------
    if /home/node_modules/othermodule/package.json exists
            check /home/node_modules/othermodule/package.json[main]
    ---------------------------------------
    if /home/node_modules/othermodule/index.js exists
            check /home/node_modules/othermodule/index.js
    ---------------------------------------
    if /home/node_modules/othermodule/index.node exists
            check /home/node_modules/othermodule/index.node
    ---------------------------------------
            check /node_modules/othermodule
            check /node_modules/othermodule.js
            check /node_modules/othermodule.json
            check /node_modules/othermodule.node
    ---------------------------------------
    if /node_modules/othermodule/package.json exists
            check /node_modules/othermodule/package.json[main]
    ---------------------------------------
    if /node_modules/othermodule/index.js exists
            check /node_modules/othermodule/index.js
    ---------------------------------------
    if /node_modules/othermodule/index.node exists
            check /node_modules/othermodule/index.node
    ---------------------------------------
    
    for each $PATH in $NODE_PATH
    
    ---------------------------------------
    if $PATH/package.json exists
            check $PATH/package.json[main]
    ---------------------------------------
    if $PATH/index.js exists
            check $PATH/index.js
    ---------------------------------------
    if $PATH/index.node exists
            check $PATH/index.node
    ---------------------------------------
    if $HOME/.node_modules/package.json exists
            check $HOME/.node_modules/package.json[main]
    ---------------------------------------
    if $HOME/.node_modules/index.js exists
            check $HOME/.node_modules/index.js
    ---------------------------------------
    if $HOME/.node_modules/index.node exists
            check $HOME/.node_modules/index.node
    ---------------------------------------
    if $HOME/.node_libraries/package.json exists
            check $HOME/.node_libraries/package.json[main]
    ---------------------------------------
    if $HOME/.node_libraries/index.js exists
            check $HOME/.node_libraries/index.js
    ---------------------------------------
    if $HOME/.node_libraries/index.node exists
            check $HOME/.node_libraries/index.node
    ---------------------------------------
    if $PREFIX/lib/node/package.json exists
            check $PREFIX/lib/node/package.json[main]
    ---------------------------------------
    if $PREFIX/lib/node/index.js exists
            check $PREFIX/lib/node/index.js
    ---------------------------------------
    if $PREFIX/lib/node/index.node exists
            check $PREFIX/lib/node/index.node
    复制代码

    简单来说,如果是require('x')这样开头不是相对or绝对地址符号,尾巴也没说是.js或者.json的,就当做模块来找。先找是不是core module,然后一级一级向上看node_modules文件夹,每一级的node_modules先看里面是否有basename为所找的文件,再看是否有模块名文件夹下package.json的main标明的文件,然后不死心地看看模块名文件夹下有没有index.js和index.node。最后找不到的话,还要搜一遍全局环境,比如$HOME/.node_modules/什么的。

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  • 原文地址:https://www.cnblogs.com/dunken/p/4364802.html
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