diff options
Diffstat (limited to 'node_modules/babel-plugin-transform-es2015-parameters/lib/destructuring.js')
-rw-r--r-- | node_modules/babel-plugin-transform-es2015-parameters/lib/destructuring.js | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/node_modules/babel-plugin-transform-es2015-parameters/lib/destructuring.js b/node_modules/babel-plugin-transform-es2015-parameters/lib/destructuring.js new file mode 100644 index 0000000..896c7c1 --- /dev/null +++ b/node_modules/babel-plugin-transform-es2015-parameters/lib/destructuring.js @@ -0,0 +1,34 @@ +"use strict"; + +exports.__esModule = true; +exports.visitor = undefined; + +var _babelTypes = require("babel-types"); + +var t = _interopRequireWildcard(_babelTypes); + +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } + +var visitor = exports.visitor = { + Function: function Function(path) { + var params = path.get("params"); + + var hoistTweak = t.isRestElement(params[params.length - 1]) ? 1 : 0; + var outputParamsLength = params.length - hoistTweak; + + for (var i = 0; i < outputParamsLength; i++) { + var param = params[i]; + if (param.isArrayPattern() || param.isObjectPattern()) { + var uid = path.scope.generateUidIdentifier("ref"); + + var declar = t.variableDeclaration("let", [t.variableDeclarator(param.node, uid)]); + declar._blockHoist = outputParamsLength - i; + + path.ensureBlock(); + path.get("body").unshiftContainer("body", declar); + + param.replaceWith(uid); + } + } + } +};
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