/
flow.js
177 lines (147 loc) 路 5.2 KB
/
flow.js
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"use strict";
const t = require("../../");
const stringifyValidator = require("../utils/stringifyValidator");
const toFunctionName = require("../utils/toFunctionName");
const NODE_PREFIX = "BabelNode";
let code = `// NOTE: This file is autogenerated. Do not modify.
// See packages/babel-types/scripts/generators/flow.js for script used.
declare class ${NODE_PREFIX}Comment {
value: string;
start: number;
end: number;
loc: ${NODE_PREFIX}SourceLocation;
}
declare class ${NODE_PREFIX}CommentBlock extends ${NODE_PREFIX}Comment {
type: "CommentBlock";
}
declare class ${NODE_PREFIX}CommentLine extends ${NODE_PREFIX}Comment {
type: "CommentLine";
}
declare class ${NODE_PREFIX}SourceLocation {
start: {
line: number;
column: number;
};
end: {
line: number;
column: number;
};
}
declare class ${NODE_PREFIX} {
leadingComments?: Array<${NODE_PREFIX}Comment>;
innerComments?: Array<${NODE_PREFIX}Comment>;
trailingComments?: Array<${NODE_PREFIX}Comment>;
start: ?number;
end: ?number;
loc: ?${NODE_PREFIX}SourceLocation;
}\n\n`;
//
const lines = [];
for (const type in t.NODE_FIELDS) {
const fields = t.NODE_FIELDS[type];
const struct = ['type: "' + type + '";'];
const args = [];
Object.keys(t.NODE_FIELDS[type])
.sort((fieldA, fieldB) => {
const indexA = t.BUILDER_KEYS[type].indexOf(fieldA);
const indexB = t.BUILDER_KEYS[type].indexOf(fieldB);
if (indexA === indexB) return fieldA < fieldB ? -1 : 1;
if (indexA === -1) return 1;
if (indexB === -1) return -1;
return indexA - indexB;
})
.forEach(fieldName => {
const field = fields[fieldName];
let suffix = "";
if (field.optional || field.default != null) suffix += "?";
let typeAnnotation = "any";
const validate = field.validate;
if (validate) {
typeAnnotation = stringifyValidator(validate, NODE_PREFIX);
}
if (typeAnnotation) {
suffix += ": " + typeAnnotation;
}
args.push(t.toBindingIdentifierName(fieldName) + suffix);
if (t.isValidIdentifier(fieldName)) {
struct.push(fieldName + suffix + ";");
}
});
code += `declare class ${NODE_PREFIX}${type} extends ${NODE_PREFIX} {
${struct.join("\n ").trim()}
}\n\n`;
// Flow chokes on super() and import() :/
if (type !== "Super" && type !== "Import") {
lines.push(
`declare function ${toFunctionName(type)}(${args.join(
", "
)}): ${NODE_PREFIX}${type};`
);
} else {
const functionName = toFunctionName(type);
lines.push(
`declare function _${functionName}(${args.join(
", "
)}): ${NODE_PREFIX}${type};`,
`declare export { _${functionName} as ${functionName} }`
);
}
}
for (let i = 0; i < t.TYPES.length; i++) {
let decl = `declare function is${
t.TYPES[i]
}(node: ?Object, opts?: ?Object): boolean`;
if (t.NODE_FIELDS[t.TYPES[i]]) {
decl += ` %checks (node instanceof ${NODE_PREFIX}${t.TYPES[i]})`;
}
lines.push(decl);
}
lines.push(
`declare function validate(n: BabelNode, key: string, value: mixed): void;`,
`declare function clone<T>(n: T): T;`,
`declare function cloneDeep<T>(n: T): T;`,
`declare function removeProperties<T>(n: T, opts: ?{}): void;`,
`declare function removePropertiesDeep<T>(n: T, opts: ?{}): T;`,
`declare type TraversalAncestors = Array<{
node: BabelNode,
key: string,
index?: number,
}>;
declare type TraversalHandler<T> = (BabelNode, TraversalAncestors, T) => void;
declare type TraversalHandlers<T> = {
enter?: TraversalHandler<T>,
exit?: TraversalHandler<T>,
};`.replace(/(^|\n) {2}/g, "$1"),
// eslint-disable-next-line
`declare function traverse<T>(n: BabelNode, TraversalHandler<T> | TraversalHandlers<T>, state?: T): void;`,
`export function is(type: string, n: BabelNode, opts: object): boolean;`,
`export function isBinding(node: BabelNode, parent: BabelNode, grandparent?: BabelNode): boolean`,
`export function isBlockScoped(node: BabelNode): boolean`,
`export function isImmutable(node: BabelNode): boolean`,
`export function isLet(node: BabelNode): boolean`,
`export function isNode(node: ?object): boolean`,
`export function isNodesEquivalent(a: any, b: any): boolean`,
`export function isPlaceholderType(placeholderType: ?string, targetType: string): boolean`,
`export function isReferenced(node: BabelNode, parent: BabelNode, grandparent?: BabelNode): boolean`,
`export function isScope(node: BabelNode, parent: BabelNode): boolean`,
`export function isSpecifierDefault(specifier: BabelNodeModuleSpecifier): boolean`,
`export function isType(nodetype: ?string, targetType: string): boolean`,
`export function isValidES3Identifier(name: string): boolean`,
`export function isValidES3Identifier(name: string): boolean`,
`export function isValidIdentifier(name: string): boolean`,
`export function isVar(node: BabelNode): boolean`
);
for (const type in t.FLIPPED_ALIAS_KEYS) {
const types = t.FLIPPED_ALIAS_KEYS[type];
code += `type ${NODE_PREFIX}${type} = ${types
.map(type => `${NODE_PREFIX}${type}`)
.join(" | ")};\n`;
}
code += `\ndeclare module "@babel/types" {
${lines
.join("\n")
.replace(/\n/g, "\n ")
.trim()}
}\n`;
//
process.stdout.write(code);