feat: add Promake.make method, make rules run again if necessary when…

… called via Node API

README.md

@@ -15,6 +15,7 @@ Promise-based JS make clone that can target anything, not just files
     + [`rule(targets, [prerequisites], [recipe], [options])`](#ruletargets-prerequisites-recipe-options)
     + [`hashRule(algorithm, target, prerequisites, [recipe], [options])`](#hashrulealgorithm-target-prerequisites-recipe-options)
     + [`task(name, [prerequisites], [recipe])`](#taskname-prerequisites-recipe)
+    + [`make(target)`](#target)
     + [`exec(command, [options])`](#execcommand-options)
     + [`spawn(command, [args], [options])`](#spawncommand-args-options)
     + [`cli(argv = process.argv, [options])`](#cliargv--processargv-options)
@@ -226,6 +227,17 @@ The created [`Rule`](#class Rule).
 Calling `task(name)` without any `prerequisites` or `recipe` looks up and returns the previously created task `Rule` for
 `name`, but *it will throw an `Error`* if no such task exists.
 
+### `make(target)`
+
+Makes the given target if necessary.
+
+##### `target`
+The name of a task or file, or an object conforming to the `Resource` interface
+
+#### Returns
+A `Promise` that will be resolved when the target recipe succeeds (or doesn't need to be rerun) or rejects when the target
+recipe fails.
+
 ### `exec(command, [options])`
 
 This is a wrapper for [`exec` from `promisify-child-process`](https://github.com/itsjustcon/node-promisify-child-process#exec)

src/Promake.js

@@ -110,6 +110,11 @@ class Promake {
     return resource.lastModified()
   }
 
+  make = async (target: any): Promise<void> => {
+    if (typeof target === 'string') target = this._normalizeName(target)
+    await this._make(target)
+  }
+
   log = (verbosity: VerbosityLevel, ...args: any) => {
     if (this.verbosity >= verbosity) console.error(chalk.bold('[promake]'), ...args) // eslint-disable-line no-console
   }

src/Rule.js

@@ -33,7 +33,7 @@ class Rule {
   }
 
   make = (): Promise<any> => {
-    return this.promise = this._make()
+    return this.promise = this._make().finally(() => this.promise = null)
   }
 
   description: (() => ?string) & ((newDescription: string) => Rule) = function (newDescription?: string): any {