first commit

node/yarn/dist/bin/yarn

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+#!/bin/sh
+argv0=$(echo "$0" | sed -e 's,\\,/,g')
+basedir=$(dirname "$(readlink "$0" || echo "$argv0")")
+
+case "$(uname -s)" in
+  Darwin) basedir="$( cd "$( dirname "$argv0" )" && pwd )";;
+  Linux) basedir=$(dirname "$(readlink -f "$0" || echo "$argv0")");;
+  *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
+  *MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+command_exists() {
+  command -v "$1" >/dev/null 2>&1;
+}
+
+if command_exists node; then
+  if [ "$YARN_FORCE_WINPTY" = 1 ] || command_exists winpty && test -t 1; then
+    winpty node "$basedir/yarn.js" "$@"
+  else
+    exec node "$basedir/yarn.js" "$@"
+  fi
+  ret=$?
+# Debian and Ubuntu use "nodejs" as the name of the binary, not "node", so we
+# search for that too. See:
+# https://lists.debian.org/debian-devel-announce/2012/07/msg00002.html
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=614907
+elif command_exists nodejs; then
+  exec nodejs "$basedir/yarn.js" "$@"
+  ret=$?
+else
+  >&2 echo 'Yarn requires Node.js 4.0 or higher to be installed.'
+  ret=1
+fi
+
+exit $ret

node/yarn/dist/bin/yarn.cmd

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+@echo off
+node "%~dp0\yarn.js" %*

node/yarn/dist/bin/yarn.js

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+#!/usr/bin/env node
+
+/* eslint-disable no-var */
+/* eslint-disable flowtype/require-valid-file-annotation */
+'use strict';
+
+var ver = process.versions.node;
+var majorVer = parseInt(ver.split('.')[0], 10);
+
+if (majorVer < 4) {
+  console.error('Node version ' + ver + ' is not supported, please use Node.js 4.0 or higher.');
+  process.exit(1); // eslint-disable-line no-process-exit
+} else {
+  try {
+    require(__dirname + '/../lib/v8-compile-cache.js');
+  } catch (err) {
+    // We don't have/need this on legacy builds and dev builds
+  }
+
+  // Just requiring this package will trigger a yarn run since the
+  // `require.main === module` check inside `cli/index.js` will always
+  // be truthy when built with webpack :(
+  // `lib/cli` may be `lib/cli/index.js` or `lib/cli.js` depending on the build.
+  var cli = require(__dirname + '/../lib/cli');
+  if (!cli.autoRun) {
+    cli.default().catch(function(error) {
+      console.error(error.stack || error.message || error);
+      process.exitCode = 1;
+    });
+  }
+}

node/yarn/dist/bin/yarnpkg

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+#!/usr/bin/env node
+require('./yarn.js');

node/yarn/dist/bin/yarnpkg.cmd

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+@echo off
+"%~dp0\yarn.cmd" %*