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"use strict";
const definitions = require("../../lib/definitions");
function addIsHelper(type, aliasKeys, deprecated) {
const targetType = JSON.stringify(type);
let aliasSource = "";
if (aliasKeys) {
aliasSource =
" || " +
aliasKeys.map(JSON.stringify).join(" === nodeType || ") +
" === nodeType";
}
return `export function is${type}(node: ?Object, opts?: Object): boolean {
${deprecated || ""}
if (!node) return false;
const nodeType = node.type;
if (nodeType === ${targetType}${aliasSource}) {
if (typeof opts === "undefined") {
return true;
} else {
return shallowEqual(node, opts);
}
}
return false;
}
`;
}
module.exports = function generateValidators() {
let output = `// @flow
/*
* This file is auto-generated! Do not modify it directly.
* To re-generate run 'make build'
*/
import shallowEqual from "../../utils/shallowEqual";\n\n`;
Object.keys(definitions.VISITOR_KEYS).forEach(type => {
output += addIsHelper(type);
});
Object.keys(definitions.FLIPPED_ALIAS_KEYS).forEach(type => {
output += addIsHelper(type, definitions.FLIPPED_ALIAS_KEYS[type]);
});
Object.keys(definitions.DEPRECATED_KEYS).forEach(type => {
const newType = definitions.DEPRECATED_KEYS[type];
const deprecated = `console.trace("The node type ${type} has been renamed to ${newType}");`;
output += addIsHelper(type, null, deprecated);
});
return output;
};
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