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latentflip/gist:c476ddee24d09405a6e9

Created March 1, 2016 12:18
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codemod
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gistfile1.js
module.exports = function transformer(file, api) {
const j = api.jscodeshift;
const update = path => {
if (path.node.expression) {
const body = j.blockStatement([j.expressionStatement(path.node.body)]);
return j.functionExpression(path.node.id, path.node.params, body, true, false)
}
return j.functionExpression(path.node.id, path.node.params, path.node.body, true, false)
};
const isLab = node => {
return node.declarations[0].id.name === 'lab';
}
const toYield = path => {
return j.yieldExpression(path.node.argument);
}
const root = j(file.source);
root.find(j.Identifier, { name: 'promiseLab' })
.replaceWith(j.identifier('coLab'))
//root.find(j.VariableDeclaration, isLab)
// .insertAfter("const Co = require('co');")
root.find(j.ArrowFunctionExpression, { async: true })
.replaceWith(update)
root.find(j.AwaitExpression)
.replaceWith(toYield)
return root.toSource({quote: 'single'});
};
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