Generate type objects for io-ts

build.ts

@@ -1,7 +1,7 @@
 import * as chokidar from 'chokidar';
 import * as path from 'path';
 import * as prettier from 'prettier';
-import { FLOW_FILENAME, spawnAsync, TYPESCRIPT_FILENAME, writeFileAsync } from './utils';
+import { FLOW_FILENAME, IOTS_FILENAME, spawnAsync, TYPESCRIPT_FILENAME, writeFileAsync } from './utils';
 
 const ROOT_DIR = __dirname;
 const TEST_FILENAME = 'typecheck.ts';
@@ -42,9 +42,17 @@ export default async function trigger() {
   console.info('Generating...');
   const output = await create();
   console.info('Formatting...');
-  const [flow, typescript] = await Promise.all([format(output.flow, 'flow'), format(output.typescript, 'typescript')]);
+  const [flow, typescript, iots] = await Promise.all([
+    format(output.flow, 'flow'),
+    format(output.typescript, 'typescript'),
+    format(output.iots, 'typescript'),
+  ],);
   console.info(`Writing files...`);
-  await Promise.all([writeFileAsync(FLOW_FILENAME, flow), writeFileAsync(TYPESCRIPT_FILENAME, typescript)]);
+  await Promise.all([
+    writeFileAsync(FLOW_FILENAME, flow),
+    writeFileAsync(TYPESCRIPT_FILENAME, typescript),
+    writeFileAsync(IOTS_FILENAME, iots),
+  ],);
   console.info('Type checking...');
   await typecheck();
 }
@@ -79,6 +87,7 @@ function typecheck() {
     spawnAsync(
       path.join(ROOT_DIR, `node_modules/.bin/${process.platform === 'win32' ? 'tsc.cmd' : 'tsc'}`),
       path.join(ROOT_DIR, TYPESCRIPT_FILENAME),
+      path.join(ROOT_DIR, IOTS_FILENAME),
       path.join(ROOT_DIR, TEST_FILENAME),
       '--noEmit',
     ),

package.json

@@ -8,7 +8,6 @@
   "author": "Fredrik Nicol <[email protected]>",
   "license": "MIT",
   "devDependencies": {
-    "@types/chokidar": "^2.1.3",
     "@types/jest": "^24.0.21",
     "@types/jsdom": "^12.2.4",
     "@types/node": "^12.12.3",
@@ -43,7 +42,8 @@
   },
   "files": [
     "index.d.ts",
-    "index.js.flow"
+    "index.js.flow",
+    "csstype.ts"
   ],
   "keywords": [
     "css",
@@ -53,5 +53,9 @@
     "typings",
     "types",
     "definitions"
-  ]
+  ],
+  "dependencies": {
+    "fp-ts": "^2.7.1",
+    "io-ts": "^2.2.9"
+  }
 }

src/declarator.ts

@@ -15,6 +15,7 @@ export interface IAlias {
 export interface IGenerics {
   name: string;
   defaults?: string;
+  default_types?: string;
 }
 
 interface Interface {
@@ -147,6 +148,7 @@ declarations.set(declarableGlobalsAndNumber, globalsAndNumberDeclaration);
 export const lengthGeneric: IGenerics = {
   name: 'TLength',
   defaults: 'string | 0',
+  default_types: 't.union([t.string, t.literal(0)])'
 };
 
 const standardLonghandPropertiesDefinition: IPropertyAlias[] = [];

src/output.ts

@@ -1,11 +1,12 @@
-import { DeclarableType, declarations, IGenerics, interfaces, isAliasProperty } from './declarator';
-import { Type } from './typer';
+import { DeclarableType, declarations, IDeclaration, IGenerics, interfaces, isAliasProperty } from './declarator';
+import { Type} from './typer';
 
 const EOL = '\n';
 
 export default () => ({
   flow: flow(),
   typescript: typescript(),
+  iots: iots(),
 });
 
 function flow() {
@@ -128,6 +129,121 @@ function typescript() {
   return interfacesOutput + EOL + EOL + declarationsOutput;
 }
 
+function iots() {
+  let header = 'import * as t from \'io-ts\'';
+  let interfacesOutput = '';
+  let genericsOutput = '';
+  const generics: Record<string, IGenerics> = {};
+  for (const item of interfaces) {
+    interfacesOutput += EOL + EOL;
+
+    for (const generic of item.generics) {
+      generics[generic.name] = generic;
+    }
+
+    interfacesOutput += `export const ${item.name} = `;
+
+    if (item.extends.length > 0) {
+      interfacesOutput += 't.intersection(['
+      for (const extend of item.extends) {
+        interfacesOutput += `${extend.name},`;
+      }
+    }
+
+    if (item.properties.length > 0) {
+      interfacesOutput += `t.partial({`
+      for (const property of item.properties) {
+        interfacesOutput += EOL;
+        if (property.comment) {
+          interfacesOutput += property.comment + EOL;
+        }
+
+        if (isAliasProperty(property)) {
+          const value = property.alias.name
+          interfacesOutput += `${JSON.stringify(property.name)}: ${
+            item.fallback ? `t.union([${value}, t.array(${value})])` : value
+          },`;
+        } else {
+          const value = stringifyTypesAsIoTs(property.type);
+          interfacesOutput += `${JSON.stringify(property.name)}: ${
+            item.fallback ? `t.union([${value}, t.array(${value})]),` : value + ','
+          }`;
+        }
+      }
+      interfacesOutput += EOL + '})'
+    }
+
+    if (item.extends.length > 0) {
+      interfacesOutput += '])'
+    }
+
+    interfacesOutput += ';';
+  }
+
+  let declarationsOutput = '';
+  let alreadyOutput: Record<string, boolean> = {};
+  for (const declaration of declarations.values()) {
+    declarationsOutput += EOL + EOL;
+
+    const outputDeclaration = (declaration: IDeclaration) => {
+      if (declaration.name in alreadyOutput) {
+        return;
+      }
+
+      for (const mightBeNeeded of declarations.values()) {
+        if (refersToName(declaration, mightBeNeeded)) {
+          outputDeclaration(mightBeNeeded);
+        }
+      }
+
+      declarationsOutput += ' ';
+
+      if (declaration.export) {
+        declarationsOutput += 'export ';
+      }
+
+      declarationsOutput += `const ${declaration.name} = ${stringifyTypesAsIoTs(declaration.types)};` + EOL;
+      alreadyOutput[declaration.name] = true;
+    }
+
+    outputDeclaration(declaration);
+  }
+
+  for (const [k, v] of Object.entries(generics)) {
+    let type;
+    if (v.default_types) {
+      type = v.default_types;
+    } else {
+      type = 't.any';
+    }
+    genericsOutput += `const ${k} = ${type};` + EOL;
+  }
+
+  return header + EOL + genericsOutput + declarationsOutput + interfacesOutput;
+}
+
+function refersToName(a: IDeclaration, b: IDeclaration) {
+  return a.types.some((type) => {
+    switch (type.type) {
+      case Type.String:
+        break;
+      case Type.Number:
+        break;
+      case Type.Length:
+        break;
+      case Type.StringLiteral:
+        break;
+      case Type.NumericLiteral:
+        break;
+      case Type.Alias:
+        if (type.name == b.name) {
+          return true;
+        }
+    }
+    return false;
+  });
+}
+
 function stringifyTypes(types: DeclarableType | DeclarableType[]) {
   if (!Array.isArray(types)) {
     types = [types];
@@ -153,6 +269,37 @@ function stringifyTypes(types: DeclarableType | DeclarableType[]) {
     .join(' | ');
 }
 
+function stringifyTypesAsIoTs(types: DeclarableType | DeclarableType[]) {
+  if (!Array.isArray(types)) {
+    return mapTypeToIoTS(types)
+  }
+
+  if (types.length == 1) {
+    return mapTypeToIoTS(types[0]);
+  }
+
+  return `t.union([ ${types
+    .map(mapTypeToIoTS)
+    .join(',')} ])`;
+
+  function mapTypeToIoTS(type: DeclarableType) {
+    switch (type.type) {
+      case Type.String:
+        return 't.string';
+      case Type.Number:
+        return 't.number';
+      case Type.StringLiteral:
+        return `t.literal(${JSON.stringify(type.literal)})`;
+      case Type.NumericLiteral:
+        return 't.number';
+      case Type.Alias:
+        return type.name;
+      case Type.Length:
+        return 'TLength';
+    }
+  }
+}
+
 function stringifyGenerics(items: IGenerics[] | undefined, ignoreDefault = false) {
   if (!items || items.length === 0) {
     return '';

utils.ts

@@ -6,6 +6,7 @@ import { createInterface } from 'readline';
 export const ROOT_DIR = __dirname;
 export const TYPESCRIPT_FILENAME = 'index.d.ts';
 export const FLOW_FILENAME = 'index.js.flow';
+export const IOTS_FILENAME = 'csstype.ts';
 
 export function writeFileAsync(filename: string, content: string) {
   return new Promise((resolve, reject) => {

yarn.lock

@@ -340,13 +340,6 @@
   dependencies:
     "@babel/types" "^7.3.0"
 
-"@types/chokidar@^2.1.3":
-  version "2.1.3"
-  resolved "https://registry.yarnpkg.com/@types/chokidar/-/chokidar-2.1.3.tgz#123ab795dba6d89be04bf076e6aecaf8620db674"
-  integrity sha512-6qK3xoLLAhQVTucQGHTySwOVA1crHRXnJeLwqK6KIFkkKa2aoMFXh+WEi8PotxDtvN6MQJLyYN9ag9P6NLV81w==
-  dependencies:
-    chokidar "*"
-
 "@types/concat-stream@^1.6.0":
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/@types/concat-stream/-/concat-stream-1.6.0.tgz#394dbe0bb5fee46b38d896735e8b68ef2390d00d"
@@ -821,21 +814,6 @@ chalk@^2.0.0, chalk@^2.0.1, chalk@^2.3.0, chalk@^2.4.2:
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
-chokidar@*:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.2.1.tgz#4634772a1924512d990d4505957bf3a510611387"
-  integrity sha512-/j5PPkb5Feyps9e+jo07jUZGvkB5Aj953NrI4s8xSVScrAo/RHeILrtdb4uzR7N6aaFFxxJ+gt8mA8HfNpw76w==
-  dependencies:
-    anymatch "~3.1.1"
-    braces "~3.0.2"
-    glob-parent "~5.1.0"
-    is-binary-path "~2.1.0"
-    is-glob "~4.0.1"
-    normalize-path "~3.0.0"
-    readdirp "~3.1.3"
-  optionalDependencies:
-    fsevents "~2.1.0"
-
 chokidar@^3.2.3:
   version "3.2.3"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.2.3.tgz#b9270a565d14f02f6bfdd537a6a2bbf5549b8c8c"
@@ -1400,6 +1378,11 @@ form-data@~2.3.2:
     combined-stream "^1.0.6"
     mime-types "^2.1.12"
 
+fp-ts@^2.7.1:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/fp-ts/-/fp-ts-2.7.1.tgz#7bd754f3362f4b9bc4d272a97c0658e9a1bc16bc"
+  integrity sha512-rYy41jF1gVhBNYbPwup50dtyT686OKOoa86PXwh8aKpBRfmvPhnBh2zUkOYj84GIMSCsgY+oJ/RVhVKRvWNPTA==
+
 fragment-cache@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/fragment-cache/-/fragment-cache-0.2.1.tgz#4290fad27f13e89be7f33799c6bc5a0abfff0d19"
@@ -1427,11 +1410,6 @@ fsevents@^1.2.7:
     nan "^2.12.1"
     node-pre-gyp "^0.12.0"
 
-fsevents@~2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.1.0.tgz#ce1a5f9ac71c6d75278b0c5bd236d7dfece4cbaa"
-  integrity sha512-+iXhW3LuDQsno8dOIrCIT/CBjeBWuP7PXe8w9shnj9Lebny/Gx1ZjVBYwexLz36Ri2jKuXMNpV6CYNh8lHHgrQ==
-
 fsevents@~2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.1.1.tgz#74c64e21df71721845d0c44fe54b7f56b82995a9"
@@ -1686,6 +1664,11 @@ invariant@^2.2.4:
   dependencies:
     loose-envify "^1.0.0"
 
+io-ts@^2.2.9:
+  version "2.2.9"
+  resolved "https://registry.yarnpkg.com/io-ts/-/io-ts-2.2.9.tgz#9a427512926462f20415099917a31dbf409ff2b0"
+  integrity sha512-Q9ob1VnpwyNoMam/BO6hm2dF4uu+to8NWSZNsRW6Q2Ni38PadgLZSQDo0hW7CJFgpJkQw4BXGwXzjr7c47c+fw==
+
 ip-regex@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/ip-regex/-/ip-regex-2.1.0.tgz#fa78bf5d2e6913c911ce9f819ee5146bb6d844e9"
@@ -3152,13 +3135,6 @@ readable-stream@^2.0.6, readable-stream@^2.2.2:
     string_decoder "~1.1.1"
     util-deprecate "~1.0.1"
 
-readdirp@~3.1.3:
-  version "3.1.3"
-  resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-3.1.3.tgz#d6e011ed5b9240a92f08651eeb40f7942ceb6cc1"
-  integrity sha512-ZOsfTGkjO2kqeR5Mzr5RYDbTGYneSkdNKX2fOX2P5jF7vMrd/GNnIAUtDldeHHumHUCQ3V05YfWUdxMPAsRu9Q==
-  dependencies:
-    picomatch "^2.0.4"
-
 readdirp@~3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-3.2.0.tgz#c30c33352b12c96dfb4b895421a49fd5a9593839"