fix(core): handle boolean input values from yaml

packages/core/__tests__/core.test.ts

@@ -18,6 +18,8 @@ const testEnvVars = {
   INPUT_MISSING: '',
   'INPUT_SPECIAL_CHARS_\'\t"\\': '\'\t"\\ response ',
   INPUT_MULTIPLE_SPACES_VARIABLE: 'I have multiple spaces',
+  INPUT_YAML_BOOLEAN_FALSE: 'OFF',
+  INPUT_YAML_BOOLEAN_TRUE: 'y',
 
   // Save inputs
   STATE_TEST_1: 'state_val'
@@ -99,6 +101,11 @@ describe('@actions/core', () => {
     )
   })
 
+  it('getInput handles boolean values', () => {
+    expect(core.getInput('yaml boolean false')).toBe(false)
+    expect(core.getInput('yaml boolean true')).toBe(true)
+  })
+
   it('setOutput produces the correct command', () => {
     core.setOutput('some output', 'some value')
     assertWriteCalls([`::set-output name=some output::some value${os.EOL}`])

packages/core/src/core.ts

@@ -57,20 +57,29 @@ export function addPath(inputPath: string): void {
   process.env['PATH'] = `${inputPath}${path.delimiter}${process.env['PATH']}`
 }
 
+const isBoolRegex = /^(y|Y|yes|Yes|YES|n|N|no|No|NO|true|True|TRUE|false|False|FALSE|on|On|ON|off|Off|OFF)$/
+const isTrueRegex = /^(y|Y|yes|Yes|YES|true|True|TRUE|on|On|ON)$/
 /**
  * Gets the value of an input.  The value is also trimmed.
  *
  * @param     name     name of the input to get
  * @param     options  optional. See InputOptions.
- * @returns   string
+ * @returns   {(string|boolean)}
  */
-export function getInput(name: string, options?: InputOptions): string {
+export function getInput(
+  name: string,
+  options?: InputOptions
+): string | boolean {
   const val: string =
-    process.env[`INPUT_${name.replace(/ /g, '_').toUpperCase()}`] || ''
-  if (options && options.required && !val) {
+    process.env[`INPUT_${name.replace(/ /g, '_').toUpperCase()}`] ?? ''
+  if (options?.required && val === '') {
     throw new Error(`Input required and not supplied: ${name}`)
   }
 
+  if (isBoolRegex.test(val)) {
+    return isTrueRegex.test(val)
+  }
+
   return val.trim()
 }