50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
import definitions from "../../lib/definitions/index.js";
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function addAssertHelper(type) {
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const result =
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definitions.NODE_FIELDS[type] || definitions.FLIPPED_ALIAS_KEYS[type]
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? `node is t.${type}`
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: "boolean";
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return `export function assert${type}(node: object | null | undefined, opts?: object | null): asserts ${
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result === "boolean" ? "node" : result
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} {
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assert("${type}", node, opts) }
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`;
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}
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export default function generateAsserts() {
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let output = `/*
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* This file is auto-generated! Do not modify it directly.
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* To re-generate run 'make build'
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*/
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import is from "../../validators/is";
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import type * as t from "../..";
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function assert(type: string, node: any, opts?: any): void {
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if (!is(type, node, opts)) {
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throw new Error(
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\`Expected type "\${type}" with option \${JSON.stringify(opts)}, \` +
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\`but instead got "\${node.type}".\`,
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);
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}
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}\n\n`;
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Object.keys(definitions.VISITOR_KEYS).forEach(type => {
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output += addAssertHelper(type);
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});
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Object.keys(definitions.FLIPPED_ALIAS_KEYS).forEach(type => {
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output += addAssertHelper(type);
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});
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Object.keys(definitions.DEPRECATED_KEYS).forEach(type => {
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const newType = definitions.DEPRECATED_KEYS[type];
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output += `export function assert${type}(node: any, opts: any): void {
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console.trace("The node type ${type} has been renamed to ${newType}");
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assert("${type}", node, opts);
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}\n`;
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});
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return output;
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}
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