fix: fix tabWidth option (#49)

Closes #33

.babelrc

@@ -5,7 +5,8 @@
       {
         "targets": {
           "node": "6"
-        }
+        },
+        "loose": true
       }
     ]
   ],

src/cli/__snapshots__/index.test.js.snap

@@ -232,6 +232,21 @@ export default One;
 "
 `;
 
+exports[`cli --tab-width 1`] = `
+"import React from \\"react\\";
+
+const One = props => (
+    <svg width={48} height={1} viewBox=\\"0 0 48 1\\" {...props}>
+        <title>Rectangle 5</title>
+        <path d=\\"M0 0h48v1H0z\\" fill=\\"#063855\\" fillRule=\\"evenodd\\" />
+    </svg>
+);
+
+export default One;
+
+"
+`;
+
 exports[`cli --template 1`] = `
 "import React from \\"react\\";
 

src/cli/index.js

@@ -36,13 +36,15 @@ program
   .option(
     '-p, --precision <value>',
     'set the number of digits in the fractional part (svgo)',
+    parseInt,
   )
   .option('--ids', 'keep ids within the svg (svgo)')
   .option('--keep-useless-defs', 'keep elements of <defs> without id (svgo)')
   .option('--no-title', 'remove title tag (svgo)')
   .option(
-    '--tab-width',
+    '--tab-width <value>',
     'specify the number of spaces by indentation-level (prettier)',
+    parseInt,
   )
   .option('--use-tabs', 'indent lines with tabs instead of spaces (prettier)')
   .option('--no-semi', 'remove semi-colons (prettier)')

src/cli/index.test.js

@@ -64,7 +64,12 @@ describe('cli', () => {
   })
 
   it('--precision', async () => {
-    const [stdout] = await exec('bin/svgr --precision 1 __fixtures__/one.svg')
+    const [stdout] = await exec('bin/svgr --precision 10 __fixtures__/one.svg')
+    expect(stdout).toMatchSnapshot()
+  })
+
+  it('--tab-width', async () => {
+    const [stdout] = await exec('bin/svgr --tab-width 4 __fixtures__/one.svg')
     expect(stdout).toMatchSnapshot()
   })