Module: Language::Node::Shebang Private

Extended by:
T::Helpers
Defined in:
language/node.rb

Overview

This module is part of a private API. This module may only be used in the Homebrew/brew repository. Third parties should avoid using this module if possible, as it may be removed or changed without warning.

Mixin module for Formula adding shebang rewrite features.

Constant Summary collapse

NODE_SHEBANG_REGEX =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning.

A regex to match potential shebang permutations.

%r{^#! ?(?:/usr/bin/(?:env )?)?node( |$)}
NODE_SHEBANG_MAX_LENGTH =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning.

The length of the longest shebang matching SHEBANG_REGEX.

T.let("#! /usr/bin/env node ".length, Integer)

Class Method Summary collapse

Class Method Details

.detected_node_shebang(formula = T.cast(self, Formula)) ⇒ Utils::Shebang::RewriteInfo

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

  • formula (Formula) (defaults to: T.cast(self, Formula))

Returns:

Raises:



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# File 'language/node.rb', line 115

def detected_node_shebang(formula = T.cast(self, Formula))
  node_deps = formula.deps.select(&:required?).map(&:name).grep(/^node(@.+)?$/)
  raise ShebangDetectionError.new("Node", "formula does not depend on Node") if node_deps.empty?
  raise ShebangDetectionError.new("Node", "formula has multiple Node dependencies") if node_deps.length > 1

  node_shebang_rewrite_info(Formula[node_deps.first].opt_bin/"node")
end