Merge pull request #6 from evelynhathaway/no-flatmap

Remove flatmap

.eslintrc.js

@@ -33,6 +33,7 @@ module.exports = {
 	],
 	"ignorePatterns": [
 		"src/foo.js",
+		"lib/foo.js",
 		"notes.js",
 		"**/__fixtures__/**/output.js",
 	],

jest.config.js

@@ -150,6 +150,9 @@ module.exports = {
 	testPathIgnorePatterns: [
 		"\\\\node_modules\\\\",
 		"\\\\__fixtures__\\\\",
+		"/__fixtures_/",
+		"__fixtures_",
+		"/node_modules/",
 	],
 
 	// The regexp pattern or array of patterns that Jest uses to detect test files
@@ -182,9 +185,7 @@ module.exports = {
 	// verbose: undefined,
 
 	// An array of regexp patterns that are matched against all source file paths before re-running tests in watch mode
-	"watchPathIgnorePatterns": [
-		"__fixtures__\\/[^/]+\\/(output|error)\\.js",
-	],
+	watchPathIgnorePatterns: ["__fixtures__\\/[^/]+\\/(output|error)\\.js"],
 
 	// Whether to use watchman for file crawling
 	// watchman: true,

plugin/index.js

@@ -88,7 +88,9 @@ module.exports = () => {
 											const mockCodeArr = inBodyArgsToProxy.map(varNameToChange => getVariableMockCodeAST(varNameToChange));
 
 											// Flat map since the `codeAST` is itself an array
-											const codeASTToAppend = mockCodeArr.flatMap(val => val.codeAST);
+											const codeASTToAppend = mockCodeArr
+												.map((val) => val.codeAST)
+												.reduce((a, b) => a.concat(b), []);
 
 											blockStatementPath.node.body = [...codeASTToAppend, ...blockStatementPath.node.body];