93c3c147d6
* Avoid bug in current version of typeof-symbol transform. * Selfhost Babel on most recent beta release.
58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
"use strict";
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// Blame Logan for this.
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// This works around https://github.com/istanbuljs/istanbuljs/issues/92 until
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// we have a version of Istanbul that actually works with 7.x.
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function istanbulHacks() {
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return {
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inherits: require("babel-plugin-istanbul").default,
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visitor: {
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Program: {
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exit: function(path) {
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if (!this.__dv__) return
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const node = path.node.body[0];
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if (
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node.type !== "VariableDeclaration" ||
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node.declarations[0].id.type !== "Identifier" ||
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!node.declarations[0].id.name.match(/cov_/) ||
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node._blockHoist !== 3
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) {
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throw new Error("Something has gone wrong in Logan's hacks.");
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}
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// Gross hacks to put the code coverage block above all compiled
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// import statement output.
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node._blockHoist = 5;
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},
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},
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},
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};
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}
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let envOpts = {
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loose: true
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};
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module.exports = {
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comments: false,
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presets: [
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["env", envOpts],
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"stage-0",
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"flow"
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],
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env: {
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cov: {
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auxiliaryCommentBefore: "istanbul ignore next",
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plugins: [istanbulHacks]
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}
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}
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};
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if (process.env.BABEL_ENV === "development") {
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envOpts.targets = {
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node: "current"
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};
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envOpts.debug = true;
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}
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