feat(back): #789 build package lock

- Script to build `package-lock.json` using makes, to keep lock
versions between the devs involved in a project.

README.md

@@ -3707,6 +3707,31 @@ It appends:
 - `node_modules/.bin` to `PATH`.
 - `node_modules` to [NODE_PATH][NODE_PATH].
 
+Pre-requisites:
+
+1. You can generate a `package-lock.json` using a specific `node` version
+   like this:
+
+    ```bash
+    m github:fluidattacks/[email protected] /utils/makeNodeJsLockfile \
+      "${node_js_version}" \
+      "${package_json}" \
+      "${package_lock}
+    ```
+
+    - Supported `node_js_version`s are: `10`, `12`, `14` and `16`.
+    - `package_json` is the **absolute path** to the `package.json` file in your
+      project.
+    - `package_lock` is the **absolute path**
+      to the `package-lock.json` file in your project, this file can be an empty
+      file.
+
+Note: the reason behind this script is to maintain `lock` versions through the
+construction of `makeNodeJsEnvironment`, since you can have an updated version
+of `nodejs` or `npm` but not the same as the version stored on the
+[Nixpkgs][NIXPKGS] repository. This doesn't affect your local version
+of `npm` or `nodejs`.
+
 Types:
 
 - makeNodeJsEnvironment (`function { ... } -> package`):

makes/utils/makeNodeJsLockfile/entrypoint.sh

@@ -0,0 +1,26 @@
+# shellcheck shell=bash
+
+function main {
+  local node_js_version="${1}"
+  local package_json="${2}"
+  local package_lock="${3}"
+  local npm_install_args=(
+    --audit false
+    --ignore-scripts true
+  )
+
+  case "${node_js_version}" in
+    10) npm=__argNode10__/bin/npm ;;
+    12) npm=__argNode12__/bin/npm ;;
+    14) npm=__argNode14__/bin/npm ;;
+    16) npm=__argNode16__/bin/npm ;;
+    *) critical NodeJs version not supported: "${node_js_version}" ;;
+  esac \
+    && pushd "$(mktemp -d)" \
+    && copy "${package_json}" package.json \
+    && "${npm}" install "${npm_install_args[@]}" \
+    && copy package-lock.json "${package_lock}" \
+    && popd || return 1
+}
+
+main "${@}"

makes/utils/makeNodeJsLockfile/main.nix

@@ -0,0 +1,15 @@
+{ __nixpkgs__
+, makeNodeJsVersion
+, makeScript
+, ...
+}:
+makeScript {
+  entrypoint = ./entrypoint.sh;
+  name = "make-node-js-lockfile";
+  replace = {
+    __argNode10__ = makeNodeJsVersion "10";
+    __argNode12__ = makeNodeJsVersion "12";
+    __argNode14__ = makeNodeJsVersion "14";
+    __argNode16__ = makeNodeJsVersion "16";
+  };
+}