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@babel/plugin-transform-modules-commonjs

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@babel/plugin-transform-modules-commonjs - npm Package Compare versions

Comparing version 7.0.0-beta.35 to 7.0.0-beta.36

24

lib/index.js

@@ -12,3 +12,5 @@ "use strict";

var _templateObject = _taggedTemplateLiteralLoose(["\n (function(){\n throw new Error(\"The CommonJS '\" + \"", "\" + \"' variable is not available in ES6 modules.\");\n })()\n "], ["\n (function(){\n throw new Error(\"The CommonJS '\" + \"", "\" + \"' variable is not available in ES6 modules.\");\n })()\n "]);
var _templateObject = _taggedTemplateLiteralLoose(["\n (function(){\n throw new Error(\"The CommonJS '\" + \"", "\" + \"' variable is not available in ES6 modules.\");\n })()\n "], ["\n (function(){\n throw new Error(\"The CommonJS '\" + \"", "\" + \"' variable is not available in ES6 modules.\");\n })()\n "]),
_templateObject2 = _taggedTemplateLiteralLoose(["\n function ", "() {\n const data = ", ";\n ", " = function(){ return data; };\n return data;\n }\n "], ["\n function ", "() {\n const data = ", ";\n ", " = function(){ return data; };\n return data;\n }\n "]),
_templateObject3 = _taggedTemplateLiteralLoose(["\n var ", " = ", ";\n "], ["\n var ", " = ", ";\n "]);

@@ -25,5 +27,13 @@ function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

noInterop = options.noInterop,
_options$lazy = options.lazy,
lazy = _options$lazy === void 0 ? false : _options$lazy,
_options$allowCommonJ = options.allowCommonJSExports,
allowCommonJSExports = _options$allowCommonJ === void 0 ? true : _options$allowCommonJ;
if (typeof lazy !== "boolean" && typeof lazy !== "function" && (!Array.isArray(lazy) || !lazy.every(function (item) {
return typeof item === "string";
}))) {
throw new Error(".lazy must be a boolean, array of strings, or a function");
}
var getAssertion = function getAssertion(localName) {

@@ -107,3 +117,4 @@ return _core.template.expression.ast(_templateObject, localName);

allowTopLevelThis: allowTopLevelThis,
noInterop: noInterop
noInterop: noInterop,
lazy: lazy
}),

@@ -134,5 +145,12 @@ meta = _rewriteModuleStateme.meta,

if ((0, _helperModuleTransforms.isSideEffectImport)(_metadata)) {
if (_metadata.lazy) throw new Error("Assertion failure");
header = _core.types.expressionStatement(loadExpr);
} else {
header = _core.types.variableDeclaration("var", [_core.types.variableDeclarator(_core.types.identifier(_metadata.name), (0, _helperModuleTransforms.wrapInterop)(path, loadExpr, _metadata.interop) || loadExpr)]);
var init = (0, _helperModuleTransforms.wrapInterop)(path, loadExpr, _metadata.interop) || loadExpr;
if (_metadata.lazy) {
header = _core.template.ast(_templateObject2, _metadata.name, init, _metadata.name);
} else {
header = _core.template.ast(_templateObject3, _metadata.name, init);
}
}

@@ -139,0 +157,0 @@

14

package.json
{
"name": "@babel/plugin-transform-modules-commonjs",
"version": "7.0.0-beta.35",
"version": "7.0.0-beta.36",
"description": "This plugin transforms ES2015 modules to CommonJS",

@@ -9,4 +9,4 @@ "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-modules-commonjs",

"dependencies": {
"@babel/helper-module-transforms": "7.0.0-beta.35",
"@babel/helper-simple-access": "7.0.0-beta.35"
"@babel/helper-module-transforms": "7.0.0-beta.36",
"@babel/helper-simple-access": "7.0.0-beta.36"
},

@@ -17,9 +17,9 @@ "keywords": [

"peerDependencies": {
"@babel/core": "7.0.0-beta.35"
"@babel/core": "7.0.0-beta.36"
},
"devDependencies": {
"@babel/core": "7.0.0-beta.35",
"@babel/helper-plugin-test-runner": "7.0.0-beta.35",
"@babel/plugin-syntax-object-rest-spread": "7.0.0-beta.35"
"@babel/core": "7.0.0-beta.36",
"@babel/helper-plugin-test-runner": "7.0.0-beta.36",
"@babel/plugin-syntax-object-rest-spread": "7.0.0-beta.36"
}
}

@@ -71,6 +71,3 @@ # @babel/plugin-transform-modules-commonjs

As per the spec, `import` and `export` are only allowed to be used at the top
level. When in loose mode these are allowed to be used anywhere.
And by default, when using exports with babel a non-enumerable `__esModule` property
By default, when using exports with babel a non-enumerable `__esModule` property
is exported.

@@ -134,1 +131,35 @@

helper (shown in inline form above).
### `lazy`
`boolean`, `Array<string>`, or `(string) => boolean`, defaults to `false`
Changes Babel's compiled `import` statements to be lazily evaluated when their
imported bindings are used for the first time.
This can improve initial load time of your module because evaluating
dependencies up front is sometimes entirely un-necessary. This is especially
the case when implementing a library module.
The value of `lazy` has a few possible effects:
* `false` - No lazy initialization of any imported module.
* `true` - Do not lazy-initialize local `./foo` imports, but lazy-init `foo` dependencies.
Local paths are much more likely to have circular dependencies, which may break if loaded lazily,
so they are not lazy by default, whereas dependencies between independent modules are rarely cyclical.
* `Array<string>` - Lazy-initialize all imports with source matching one of the given strings.
* `(string) => boolean` - Pass a callback that will be called to decide if a given source string should be lazy-loaded.
The two cases where imports can never be lazy are:
* `import "foo";`
Side-effect imports are automatically non-lazy since their very existence means
that there is no binding to later kick off initialization.
* `export * from "foo"`
Re-exporting all names requires up-front execution because otherwise there is no
way to know what names need to be exported.
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