Command Line Interface

npm install mime
# or
npm install -g mime  # for global access

mime [path_or_extension]

# File extensions
mime js                          # text/javascript
mime json                        # application/json
mime png                         # image/png

# File paths
mime script.js                   # text/javascript
mime data/config.json           # application/json
mime images/photo.jpg           # image/jpeg
mime package.tar.gz             # application/gzip

# Complex paths
mime "path with spaces/file.txt" # text/plain
mime ./src/index.ts             # text/typescript

mime --reverse [mime_type]
mime -r [mime_type]

# Standard MIME types
mime -r text/plain              # txt
mime -r application/json        # json
mime -r image/jpeg              # jpeg
mime -r text/javascript         # js

# MIME types with parameters (automatically handled)
mime -r "text/html; charset=utf-8"  # html
mime --reverse "application/json; charset=utf-8"  # json

mime --version
mime -v
mime --v

4.0.7

mime --name  
mime -n
mime --n

mime

mime --help
mime -h
mime --h

mime - A comprehensive library for mime-type mapping

Usage:

  mime [flags] [path_or_extension]

  Flags:
    --help, -h                     Show this message
    --version, -v                  Display the version
    --name, -n                     Print the name of the program
    --reverse, -r                  Print the extension of the mime type

  Note: the command will exit after it executes if a command is specified
  The path_or_extension is the path to the file or the extension of the file.

  Examples:
    mime --help
    mime --version
    mime --name
    mime -v
    mime --reverse application/text
    mime src/log.js
    mime new.py
    mime foo.sh

# Success (type/extension found)
mime script.js                  # Exit code: 0, Output: text/javascript
mime -r text/plain              # Exit code: 0, Output: txt

# Failure (type/extension not found)
mime unknown_extension          # Exit code: 1, No output
mime -r unknown/mimetype        # Exit code: 1, No output

# Info commands always succeed
mime --version                  # Exit code: 0
mime --help                     # Exit code: 0

#!/bin/bash

# Check if file has expected MIME type
file="data.json"
expected="application/json"
actual=$(mime "$file")

if [ "$actual" = "$expected" ]; then
    echo "File type correct: $actual"
else
    echo "Unexpected file type: $actual (expected $expected)"
    exit 1
fi

# Process all JavaScript files in a directory
for file in src/*.js; do
    type=$(mime "$file")
    echo "$file: $type"
done

# Find files by MIME type
find . -type f | while read file; do
    if [ "$(mime "$file" 2>/dev/null)" = "text/javascript" ]; then
        echo "JavaScript file: $file"
    fi
done

# Process file based on MIME type
file="input.data"
mime_type=$(mime "$file")

case "$mime_type" in
    "application/json")
        echo "Processing JSON file..."
        jq . "$file"
        ;;
    "text/plain")
        echo "Processing text file..."
        cat "$file"
        ;;
    "image/"*)
        echo "Processing image file..."
        # image processing logic
        ;;
    *)
        echo "Unknown file type: $mime_type"
        exit 1
        ;;
esac

# Check if file extension matches MIME type
check_file_consistency() {
    local file="$1"
    local mime_type=$(mime "$file")
    local expected_ext=$(mime -r "$mime_type")
    local actual_ext="${file##*.}"
    
    if [ "$actual_ext" = "$expected_ext" ]; then
        echo "✓ $file: consistent ($mime_type)"
    else
        echo "✗ $file: extension '$actual_ext' doesn't match type '$mime_type' (expected '$expected_ext')"
    fi
}

# Usage
check_file_consistency "script.js"      # ✓ script.js: consistent (text/javascript)
check_file_consistency "data.js"        # ✗ data.js: extension 'js' doesn't match type 'application/json' (expected 'json')

# No arguments (tries to get type of empty string)
mime                            # Exit code: 1, No output

# Invalid file paths (no extension detected)
mime "file_without_extension"   # Exit code: 1, No output
mime "path/to/directory/"       # Exit code: 1, No output

# Invalid MIME type
mime -r "not-a-mime-type"       # Exit code: 1, No output
mime -r ""                      # Exit code: 1, No output

# Missing argument for reverse lookup
mime -r                         # Uses last argument as MIME type

# Check if command succeeded without capturing output
if mime "unknown.ext" >/dev/null 2>&1; then
    echo "MIME type found"
else
    echo "MIME type not found"
fi