获取 npm 包的下一个主要版本（不一定是最新的！）

Question

我正在编写一个 bash 脚本来批量更新和测试包。 但是，我希望脚本不要跳转到最新版本，而是跳转到下一个主要版本（如果它存在并通过测试）。

我正在寻找类似的东西（为简洁起见，将更长的代码段简化为伪代码）

#!/bin/bash

# Assign package name to $packageName

# START MAIN LOOP

# Start code that does a preliminary test
...
# End code that does preliminary test
# Assign current package version to $current

npm install $packagename@#[next? $current+1? I have no clue, especially since different repos can have different major version identifying schemes.]

# Do post tests
# # If fails post tests
       # alert user to breaking version
       npm install $packagename@$current # revert to previous version

# # If succeeds post tests, check if now at @latest
# # # If not at @latest, repeat MAIN LOOP
# # # If at @latest, exit 0.

Answer 1

#!/usr/bin/bash
arr=('npm' 'yarn' 'puppetter' 'express')
for pkg in "${arr[@]}"; do
    myversion=$(npm -g list "$pkg" | grep @ | cut -d@ -f2)
    reg=$(echo "$myversion" | cut -f1,2 -d.)
    int_myversion=$(echo "$myversion" | cut -f3 -d. | tail -1)
    newversion="$(npm view "$pkg" versions | grep -oP "$reg.[0-9]{1,2}")"
    int_newversion=$(echo "$newversion" | cut -f3 -d. | tail -1)

    if [[ "$int_newversion" -gt "$int_myversion" ]]; then
        n=$(echo "$newversion" | tail -1)
        echo "$pkg:$myversion you have an upgrade -->$n"
    else
        echo "$pkg:$myversion OK"
    fi
done