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Add server config, move plugin file

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This commit is contained in:
Michael Jackson
2018-05-17 10:10:33 -07:00
parent 041d0c407f
commit da06a5b97f
6 changed files with 29 additions and 10 deletions
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77
server/utils/__tests__/unpkgRewriteBabelPlugin-test.js
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const babel = require("babel-core");
const unpkgRewrite = require("../unpkgRewriteBabelPlugin");
const testCases = [
{
before: "import React from 'react';",
after: "import React from 'https://unpkg.com/react@15.6.1?module';"
},
{
before: "import router from '@angular/router';",
after:
"import router from 'https://unpkg.com/@angular/router@4.3.5?module';"
},
{
before: "import map from 'lodash.map';",
after: "import map from 'https://unpkg.com/lodash.map@4.6.0?module';"
},
{
before: "import fs from 'pn/fs';",
after: "import fs from 'https://unpkg.com/pn@1.0.0/fs?module';"
},
{
before: "import cupcakes from './cupcakes';",
after: "import cupcakes from './cupcakes?module';"
},
{
before: "import shoelaces from '/shoelaces';",
after: "import shoelaces from '/shoelaces?module';"
},
{
before: "import something from '//something.com/whatevs';",
after: "import something from '//something.com/whatevs';"
},
{
before: "import something from 'http://something.com/whatevs';",
after: "import something from 'http://something.com/whatevs';"
},
{
before: "let ReactDOM = require('react-dom');",
after: "let ReactDOM = require('react-dom');"
},
{
before: "export React from 'react';",
after: "export React from 'https://unpkg.com/react@15.6.1?module';"
},
{
before: "export { Component } from 'react';",
after: "export { Component } from 'https://unpkg.com/react@15.6.1?module';"
},
{
before: "export * from 'react';",
after: "export * from 'https://unpkg.com/react@15.6.1?module';"
},
{
before: "export var message = 'hello';",
after: "export var message = 'hello';"
}
];
const dependencies = {
react: "15.6.1",
"@angular/router": "4.3.5",
"lodash.map": "4.6.0",
pn: "1.0.0"
};
describe("Rewriting imports/exports", () => {
testCases.forEach(testCase => {
it(`successfully rewrites "${testCase.before}"`, () => {
const result = babel.transform(testCase.before, {
plugins: [unpkgRewrite(dependencies)]
});
expect(result.code).toEqual(testCase.after);
});
});
});

44
server/utils/unpkgRewriteBabelPlugin.js
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@ -1,44 +0,0 @@
const URL = require("whatwg-url");
const warning = require("warning");
const bareIdentifierFormat = /^((?:@[^\/]+\/)?[^\/]+)(\/.*)?$/;
function unpkgRewriteBabelPlugin(dependencies = {}) {
return {
inherits: require("babel-plugin-syntax-export-extensions"),
visitor: {
"ImportDeclaration|ExportNamedDeclaration|ExportAllDeclaration"(path) {
if (!path.node.source) return; // probably a variable declaration
if (
URL.parseURL(path.node.source.value) != null ||
path.node.source.value.substr(0, 2) === "//"
)
return; // valid URL or URL w/o protocol, leave it alone
if ([".", "/"].indexOf(path.node.source.value.charAt(0)) >= 0) {
// local path
path.node.source.value = `${path.node.source.value}?module`;
} else {
// "bare" identifier
const match = bareIdentifierFormat.exec(path.node.source.value);
const packageName = match[1];
const file = match[2] || "";
warning(
dependencies[packageName],
'Missing version info for package "%s" in dependencies; falling back to "latest"',
packageName
);
const version = dependencies[packageName] || "latest";
path.node.source.value = `https://unpkg.com/${packageName}@${version}${file}?module`;
}
}
}
};
}
module.exports = unpkgRewriteBabelPlugin;