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babel-plugin-transform-es2015-block-scoping

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babel-plugin-transform-es2015-block-scoping - npm Package Compare versions

Comparing version

7.0.0-alpha.15
to
7.0.0-alpha.16

78

lib/index.js

@@ -12,3 +12,2 @@ "use strict";

scope = path.scope;
if (!isBlockScoped(node)) return;

@@ -22,2 +21,3 @@ convertBlockScopedToVar(path, null, parent, scope, true);

var decl = node.declarations[i];
if (decl.init) {

@@ -28,2 +28,3 @@ var assign = t.assignmentExpression("=", decl.id, decl.init);

}
decl.init = file.addHelper("temporalUndefined");

@@ -45,3 +46,2 @@ }

scope = path.scope;
t.ensureBlock(node);

@@ -55,3 +55,2 @@ var blockScoping = new BlockScoping(path, path.get("body"), parent, scope, file);

scope = path.scope;
var blockScoping = new BlockScoping(null, path.get("body"), parent, scope, file);

@@ -96,3 +95,3 @@ blockScoping.run();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var DONE = new WeakSet();

@@ -132,2 +131,3 @@ function ignoreBlock(path) {

var ids = path.getBindingIdentifiers();
for (var name in ids) {

@@ -142,3 +142,5 @@ var binding = scope.getOwnBinding(name);

function isVar(node) {
return t.isVariableDeclaration(node, { kind: "var" }) && !isBlockScoped(node);
return t.isVariableDeclaration(node, {
kind: "var"
}) && !isBlockScoped(node);
}

@@ -159,2 +161,3 @@

}
return path.skip();

@@ -167,8 +170,5 @@ }

var ref = state.letReferences[path.node.name];
if (!ref) return;
var localBinding = path.scope.getBindingIdentifier(path.node.name);
if (localBinding && localBinding !== ref) return;
state.closurify = true;

@@ -183,6 +183,6 @@ }

if (path.isForStatement()) {
if (isVar(node.init, node)) {
var nodes = self.pushDeclar(node.init);
if (nodes.length === 1) {

@@ -208,11 +208,8 @@ node.init = nodes[0];

};
var loopLabelVisitor = {
LabeledStatement: function LabeledStatement(_ref, state) {
var node = _ref.node;
state.innerLabels.push(node.label.name);
}
};
var continuationVisitor = {

@@ -222,2 +219,3 @@ enter: function enter(path, state) {

var bindings = path.getBindingIdentifiers();
for (var name in bindings) {

@@ -227,2 +225,3 @@ if (state.outsideReferences[name] !== path.scope.getBindingIdentifier(name)) {

}
state.reassignments[name] = true;

@@ -264,5 +263,3 @@ }

scope = path.scope;
if (node[this.LOOP_IGNORE]) return;
var replace = void 0;

@@ -280,3 +277,2 @@ var loopText = loopNodeTo(node);

if (state.ignoreLabeless) return;
if (t.isBreakStatement(node) && t.isSwitchCase(parent)) return;

@@ -306,11 +302,7 @@ }

function BlockScoping(loopPath, blockPath, parent, scope, file) {
_classCallCheck(this, BlockScoping);
this.parent = parent;
this.scope = scope;
this.file = file;
this.blockPath = blockPath;
this.block = blockPath.node;
this.outsideLetReferences = Object.create(null);

@@ -331,5 +323,4 @@ this.hasLetReferences = false;

var block = this.block;
if (block._letDone) return;
block._letDone = true;
if (DONE.has(block)) return;
DONE.add(block);
var needsClosure = this.getLetReferences();

@@ -366,2 +357,3 @@

if (!binding) continue;
if (binding.kind === "let" || binding.kind === "const") {

@@ -402,4 +394,4 @@ binding.kind = "var";

}
var block = this.block;
var outsideRefs = this.outsideLetReferences;

@@ -414,5 +406,3 @@

delete this.letReferences[id.name];
this.scope.rename(id.name);
this.letReferences[id.name] = id;

@@ -425,14 +415,8 @@ outsideRefs[id.name] = id;

this.has = this.checkLoop();
this.hoistVarDeclarations();
var params = (0, _values2.default)(outsideRefs);
var args = (0, _values2.default)(outsideRefs);
var isSwitch = this.blockPath.isSwitchStatement();
var fn = t.functionExpression(null, params, t.blockStatement(isSwitch ? [block] : block.body));
this.addContinuations(fn);
var call = t.callExpression(t.nullLiteral(), args);

@@ -442,2 +426,3 @@ var basePath = ".callee";

var hasYield = _babelTraverse2.default.hasType(fn.body, this.scope, "YieldExpression", t.FUNCTION_TYPES);
if (hasYield) {

@@ -450,2 +435,3 @@ fn.generator = true;

var hasAsync = _babelTraverse2.default.hasType(fn.body, this.scope, "AwaitExpression", t.FUNCTION_TYPES);
if (hasAsync) {

@@ -459,9 +445,8 @@ fn.async = true;

var index = void 0;
if (this.has.hasReturn || this.has.hasBreakContinue) {
var ret = this.scope.generateUidIdentifier("ret");
this.body.push(t.variableDeclaration("var", [t.variableDeclarator(ret, call)]));
placeholderPath = "declarations.0.init" + basePath;
index = this.body.length - 1;
this.buildHas(ret);

@@ -481,4 +466,2 @@ } else {

key = _blockPath.key;
this.blockPath.replaceWithMultiple(this.body);

@@ -492,8 +475,7 @@ callPath = parentPath.get(listKey)[key + index];

var placeholder = callPath.get(placeholderPath);
var fnPath = void 0;
var fnPath = void 0;
if (this.loop) {
var ref = this.scope.generateUidIdentifier("loop");
var p = this.loopPath.insertBefore(t.variableDeclaration("var", [t.variableDeclarator(ref, fn)]));
placeholder.replaceWith(ref);

@@ -514,3 +496,2 @@ fnPath = p[0].get("declarations.0.init");

};
this.scope.traverse(fn, continuationVisitor, state);

@@ -521,8 +502,5 @@

if (!state.reassignments[param.name]) continue;
var newParam = this.scope.generateUidIdentifier(param.name);
fn.params[i] = newParam;
this.scope.rename(param.name, newParam.name, fn);
fn.body.body.push(t.expressionStatement(t.assignmentExpression("=", param, newParam)));

@@ -536,3 +514,2 @@ }

var block = this.block;
var declarators = [];

@@ -542,2 +519,3 @@

var init = this.loop.left || this.loop.init;
if (isBlockScoped(init)) {

@@ -551,2 +529,3 @@ declarators.push(init);

node = node || path.node;
if (t.isClassDeclaration(node) || t.isFunctionDeclaration(node) || isBlockScoped(node)) {

@@ -556,4 +535,6 @@ if (isBlockScoped(node)) {

}
declarators = declarators.concat(node.declarations || node);
}
if (t.isLabeledStatement(node)) {

@@ -577,2 +558,3 @@ addDeclarationsFromChild(path.get("body"), node.body);

var _declarPath = this.blockPath.get("cases")[_i];
var declar = consequents[j];

@@ -586,3 +568,2 @@ addDeclarationsFromChild(_declarPath, declar);

var _declar = declarators[_i2];
var keys = t.getBindingIdentifiers(_declar, false, true);

@@ -594,3 +575,2 @@ (0, _extend2.default)(this.letReferences, keys);

if (!this.hasLetReferences) return;
var state = {

@@ -602,6 +582,6 @@ letReferences: this.letReferences,

};
var loopOrFunctionParent = this.blockPath.find(function (path) {
return path.isLoop() || path.isFunction();
});
if (loopOrFunctionParent && loopOrFunctionParent.isLoop()) {

@@ -612,3 +592,2 @@ state.loopDepth++;

this.blockPath.traverse(letReferenceBlockVisitor, state);
return state.closurify;

@@ -628,6 +607,4 @@ };

};
this.blockPath.traverse(loopLabelVisitor, state);
this.blockPath.traverse(loopVisitor, state);
return state;

@@ -643,2 +620,3 @@ };

var names = t.getBindingIdentifiers(node);
for (var name in names) {

@@ -649,3 +627,2 @@ declars.push(t.variableDeclarator(names[name]));

this.body.push(t.variableDeclaration(node.kind, declars));
var replace = [];

@@ -656,3 +633,2 @@

if (!declar.init) continue;
var expr = t.assignmentExpression("=", declar.id, declar.init);

@@ -667,3 +643,2 @@ replace.push(t.inherits(expr, declar));

var body = this.body;
var retCheck = void 0;

@@ -695,2 +670,3 @@ var has = this.has;

var caseConsequent = cases[i].consequent[0];
if (t.isBreakStatement(caseConsequent) && !caseConsequent.label) {

@@ -697,0 +673,0 @@ caseConsequent.label = this.loopLabel = this.loopLabel || this.scope.generateUidIdentifier("loop");

17

lib/tdz.js

@@ -31,3 +31,2 @@ "use strict";

if (!declared) return false;
return scope.getBindingIdentifier(node.name) === declared;

@@ -39,13 +38,10 @@ }

if (!this.file.opts.tdz) return;
var node = path.node,
parent = path.parent,
scope = path.scope;
if (path.parentPath.isFor({ left: node })) return;
if (path.parentPath.isFor({
left: node
})) return;
if (!isReference(node, scope, state)) return;
var bindingPath = scope.getBinding(node.name).path;
var status = getTDZStatus(path, bindingPath);

@@ -56,5 +52,3 @@ if (status === "inside") return;

var assert = buildTDZAssert(node, state.file);
bindingPath.parent._tdzThis = true;
path.skip();

@@ -72,12 +66,7 @@

},
AssignmentExpression: {
exit: function exit(path, state) {
if (!this.file.opts.tdz) return;
var node = path.node;
if (node._ignoreBlockScopingTDZ) return;
var nodes = [];

@@ -84,0 +73,0 @@ var ids = path.getBindingIdentifiers();

10

package.json
{
"name": "babel-plugin-transform-es2015-block-scoping",
"version": "7.0.0-alpha.15",
"version": "7.0.0-alpha.16",
"description": "Compile ES2015 block scoping (const and let) to ES5",

@@ -9,5 +9,5 @@ "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-es2015-block-scoping",

"dependencies": {
"babel-template": "7.0.0-alpha.15",
"babel-traverse": "7.0.0-alpha.15",
"babel-types": "7.0.0-alpha.15",
"babel-template": "7.0.0-alpha.16",
"babel-traverse": "7.0.0-alpha.16",
"babel-types": "7.0.0-alpha.16",
"lodash": "^4.2.0"

@@ -19,4 +19,4 @@ },

"devDependencies": {
"babel-helper-plugin-test-runner": "7.0.0-alpha.15"
"babel-helper-plugin-test-runner": "7.0.0-alpha.16"
}
}