MitMaro's Build Scripts

A set of Bash functions that can be used in building projects.

Install

npm

npm install --save[-dev] @mitmaro/build-scripts

Yarn

Install the package using yarn:

yarn add @mitmaro/build-scripts

Usage

Create a file to source the build-scripts that contains the following, selecting npm or yarn:

#!/usr/bin/env bash
source "$(npm|yarn bin)/build-scripts.bash" || exit 1

On the top of the script files add the following to source the file created above, replacing ./common.bash with the relative path to the file created above.

#!/usr/bin/env bash
cd "$(dirname "${BASH_SOURCE[0]}")" && source "./common.bash"

API

debug|info|warn|error <message>...

Prints a formatted message of type debug, info, warning or error.

error will print message to stderr instead of stdout.

Example

debug "My debug" "message" 
info "My info" "message"
warn "My warning" "message"
error "My error" "message"

hl <message>

Prints a highlighted message.

Example

info "Print $(hl "foobar") as highlighted"

fatal message [<exit_code>]

Prints a message using the error function and then exits is a non-zero exit_code is provided. If the optional exit_code argument is not provided, the last commands exit code will be used.

Example

# Print error message and exits with code 22
fatal "An error occurred" 22

# Usage as an error handler
my_command || fatal "my_command failed"

set-log-level <level>

Sets the logging level to the provided level. A log function will only output when the level is at or above the level of the function. The levels go from debug -> info -> warn -> error -> fatal and defaults to info.

Example

set-log-level "warn"

set-log-name <name>

Sets a logging name for this process that will be printed before every log output. It will automatically surrounded like [<name>]. By default no logging name will be used.

Example

set-log-name "my-process.1"

clear-log-name

Clears the logging name.

Example

clear-log-name

check-command <command>

Checks if the command provided as command exists, if not found the script will exit with EXIT_CODE_INVALID_STATE.

Example

check-command "node"

ensure-directory <directory>

Checks if the directory at directory exists, if not it will be recursively created.

Example

ensure-directory "build/coverage/"

include <file-path>

Sources file-path, where file-path is relative to $PWD or the include path as set by set-include-path.

Example

include "common/libs.bash"

set-include-path <path>

Sets the path that is used as a base for the include function.

Example

set-include-path "$(npm prefix)/scripts/"

get-project-root <project-type>

Prints the root of the project for the given project type.

Supported project types:

• node : Looks up from current directory for package.json

If the project root cannot be found, nothing will be printed and false will be returned.

If an invalid project-type is provided the script will exit with EXIT_CODE_INVALID_STATE.

Example

project_root="$(get-project-root node)"

load-environment-file <filepath>

Loads an environment file of key value pairs without over writting existing values. The format of the environment variable files follows "section 3.2.2. Creating variables".

Example

load-environment-file .env

process-run <command> <name> <working-directory> [<process-arguments>...]

Safely starts the provided command with a unique provided name from the given working-directory. Additional arguments can be provided as process-arguments. The process will be started with a pid file generated allowing it to be killed at a later time. The pid-file will be created in working-directory with a file name of <name>.pid.

Example

process-run "node" "server-$PORT" "$PWD" "process-file.js" "file.csv"

shutdown-process <pid-file>

Kill the process references in the provided pid-file waiting for it to properly exit. The pid-file is generally created with the process-run function.

Example

shutdown "build/server-$PORT.pid"

yn <value>

Parses the provided value and does a case-insensitive comparision against y, yes, true and 1 and returns true if there is a match, else a false is returned.

Example

yn "yes" # returns true
yn "no"  # returns false

init-node

Initializes the build scripts as a node project. This will add the node_modules bin directory to the path and change into the node project root.

Error Codes

License

This project is released under the ISC license. See LICENSE.