1 | import definitions from "../../lib/definitions/index.js";
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2 |
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3 | function addAssertHelper(type) {
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4 | const result =
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5 | definitions.NODE_FIELDS[type] || definitions.FLIPPED_ALIAS_KEYS[type]
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6 | ? `node is t.${type}`
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7 | : "boolean";
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8 |
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9 | return `export function assert${type}(node: object | null | undefined, opts?: object | null): asserts ${
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10 | result === "boolean" ? "node" : result
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11 | } {
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12 | assert("${type}", node, opts) }
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13 | `;
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14 | }
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15 |
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16 | export default function generateAsserts() {
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17 | let output = `/*
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18 | * This file is auto-generated! Do not modify it directly.
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19 | * To re-generate run 'make build'
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20 | */
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21 | import is from "../../validators/is";
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22 | import type * as t from "../..";
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23 |
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24 | function assert(type: string, node: any, opts?: any): void {
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25 | if (!is(type, node, opts)) {
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26 | throw new Error(
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27 | \`Expected type "\${type}" with option \${JSON.stringify(opts)}, \` +
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28 | \`but instead got "\${node.type}".\`,
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29 | );
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30 | }
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31 | }\n\n`;
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32 |
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33 | Object.keys(definitions.VISITOR_KEYS).forEach(type => {
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34 | output += addAssertHelper(type);
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35 | });
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36 |
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37 | Object.keys(definitions.FLIPPED_ALIAS_KEYS).forEach(type => {
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38 | output += addAssertHelper(type);
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39 | });
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40 |
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41 | Object.keys(definitions.DEPRECATED_KEYS).forEach(type => {
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42 | const newType = definitions.DEPRECATED_KEYS[type];
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43 | output += `export function assert${type}(node: any, opts: any): void {
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44 | console.trace("The node type ${type} has been renamed to ${newType}");
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45 | assert("${type}", node, opts);
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46 | }\n`;
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47 | });
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48 |
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49 | return output;
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50 | }
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