adds the ability to set ignore-scripts in npm config

__tests__/ignore-scripts.test.ts

@@ -0,0 +1,46 @@
+import path from 'path';
+import fs from 'fs';
+import * as ignorescripts from '../src/ignore-scripts';
+import {getNpmrcLocation} from '../src/util';
+
+let rcFile: string;
+
+describe('ignore-scripts tests', () => {
+  const runnerDir = path.join(__dirname, 'runner');
+
+  beforeEach(async () => {
+    rcFile = getNpmrcLocation();
+  }, 5000);
+
+  afterEach(async () => {
+    fs.unlinkSync(rcFile);
+    rcFile = getNpmrcLocation();
+  }, 10000);
+
+  it('sets the value to true according to input', async () => {
+    ignorescripts.ignoreScriptsInNpmConfig('true');
+    const rcContents = fs.readFileSync(rcFile).toString();
+    expect(rcContents).toMatch('\nignore-scripts=true\n');
+  });
+
+  it('sets the value to false according to input', async () => {
+    ignorescripts.ignoreScriptsInNpmConfig('false');
+    const rcContents = fs.readFileSync(rcFile).toString();
+    expect(rcContents).toMatch('\nignore-scripts=false\n');
+  });
+
+  it('defaults to false on empty input', async () => {
+    ignorescripts.ignoreScriptsInNpmConfig('');
+    const rcContents = fs.readFileSync(rcFile).toString();
+    expect(rcContents).toMatch('\nignore-scripts=false\n');
+  });
+
+  it('preserves existing npmrc file contents', async () => {
+    fs.writeFileSync(getNpmrcLocation(), 'something\nwhatever\nstuff');
+    ignorescripts.ignoreScriptsInNpmConfig('true');
+    const rcContents = fs.readFileSync(rcFile).toString();
+    expect(rcContents).toMatch(
+      'something\nwhatever\nstuff\nignore-scripts=true\n'
+    );
+  });
+});