Hardcode to double quotes, indent to 2 spaces (#5824)

packages/babel-generator/src/index.js

@@ -1,4 +1,3 @@
-import detectIndent from "detect-indent";
 import SourceMap from "./source-map";
 import * as messages from "babel-messages";
 import Printer from "./printer";
@@ -12,7 +11,7 @@ import type { Format } from "./printer";
 class Generator extends Printer {
   constructor(ast, opts = {}, code) {
     const tokens = ast.tokens || [];
-    const format = normalizeOptions(code, opts, tokens);
+    const format = normalizeOptions(code, opts);
     const map = opts.sourceMaps ? new SourceMap(opts, code) : null;
     super(format, map, tokens);
 
@@ -39,13 +38,7 @@ class Generator extends Printer {
  * - If `opts.compact = "auto"` and the code is over 500KB, `compact` will be set to `true`.
  */
 
-function normalizeOptions(code, opts, tokens): Format {
-  let style = "  ";
-  if (code && typeof code === "string") {
-    const indent = detectIndent(code).indent;
-    if (indent && indent !== " ") style = indent;
-  }
-
+function normalizeOptions(code, opts): Format {
   const format = {
     auxiliaryCommentBefore: opts.auxiliaryCommentBefore,
     auxiliaryCommentAfter: opts.auxiliaryCommentAfter,
@@ -56,11 +49,11 @@ function normalizeOptions(code, opts, tokens): Format {
     compact: opts.compact,
     minified: opts.minified,
     concise: opts.concise,
-    quotes: findCommonStringDelimiter(code, tokens),
+    quotes: "double",
     jsonCompatibleStrings: opts.jsonCompatibleStrings,
     indent: {
       adjustMultilineComment: true,
-      style: style,
+      style: "  ",
       base: 0,
     },
   };
@@ -89,43 +82,6 @@ function normalizeOptions(code, opts, tokens): Format {
   return format;
 }
 
-/**
- * Determine if input code uses more single or double quotes.
- */
-function findCommonStringDelimiter(code, tokens) {
-  const DEFAULT_STRING_DELIMITER = "double";
-  if (!code) {
-    return DEFAULT_STRING_DELIMITER;
-  }
-
-  const occurences = {
-    single: 0,
-    double: 0,
-  };
-
-  let checked = 0;
-
-  for (let i = 0; i < tokens.length; i++) {
-    const token = tokens[i];
-    if (token.type.label !== "string") continue;
-
-    const raw = code.slice(token.start, token.end);
-    if (raw[0] === "'") {
-      occurences.single++;
-    } else {
-      occurences.double++;
-    }
-
-    checked++;
-    if (checked >= 3) break;
-  }
-  if (occurences.single > occurences.double) {
-    return "single";
-  } else {
-    return "double";
-  }
-}
-
 /**
  * We originally exported the Generator class above, but to make it extra clear that it is a private API,
  * we have moved that to an internal class instance and simplified the interface to the two public methods