1.0.0 • Published 1 year ago

@erboladaiteas/quaerat-exercitationem v1.0.0

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-
License
MIT
Repository
github
Last release
1 year ago

@erboladaiteas/quaerat-exercitationem

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@erboladaiteas/quaerat-exercitationem is a lighter-weight, more narrowly focused package that aims to accomplish some of the goals of regenerator, while remaining small enough that it won’t (completely) break a website’s performance budget if run in the browser. It may not be able to boast as impressive size reductions as preact has compared to react, but it is a quarter of the size of regenerator (minified and gzipped), while supporting most of the same features.

This library does not aim to support the full set of ES6 to ES5 transforms. Specifically, it supports:

  • destructuring assignment
  • block scoping (let and const) to var
  • arrow functions
  • async / await
  • generators (sync and async)
  • for ... of loops
  • function parameter destructuring
  • function parameter defaults
  • rest / spread syntax
  • simple template literals
  • shorthand object properties
  • computed object properties

It intentionally does not (and will not) support transforms for:

  • classes
  • import / export
  • react, jsx, flow, or typescript syntax
  • tagged template literals

API

@erboladaiteas/quaerat-exercitationem.compile

This function accepts a javascript string and returns ES5-compatible javascript. If generators are involved, it assumes regeneratorRuntime is available in the global scope.

// input
import { compile } from '@erboladaiteas/quaerat-exercitationem';

console.log(compile('function *gen() { yield 1; }'));

// output
var _marked = /* #__PURE__ */ regeneratorRuntime.mark(gen);
function gen() {
  return regeneratorRuntime.wrap(function gen$(_context) {
    while (1) switch (_context.prev = _context.next) {
      case 0:
        _context.next = 2;
        return 1;
      case 2:
      case "end":
        return _context.stop();
    }
  }, _marked);
}

@erboladaiteas/quaerat-exercitationem.transform

Also importable from @@erboladaiteas/quaerat-exercitationem/transform; performs an AST transform (conforming to the ESTree Spec) to ES5-compatible AST.

import transform from '@@erboladaiteas/quaerat-exercitationem/transform';

// input: AST for `let {x} = y`
var ast = transform({
  type: 'File',
  program: {
    type: 'Program',
    body: [{
      type: 'VariableDeclaration',
      kind: 'let',
      declarations: [{
        type: 'VariableDeclarator',
        id: {
          type: 'ObjectPattern',
          properties: [
            {
              type: 'ObjectProperty',
              key: {type: 'Identifier', name: 'x'},
              value: {type: 'Identifier', name: 'x'},
              shorthand: true
            }
          ]
        },
        init: {type: 'Identifier', name: 'y'}
      }]
    }]
  }
});
console.log(ast);

// result: AST for `var _y = y; var x = _y.x`
{
  type: 'File',
  program: {
    type: 'Program',
    body: [{
      type: 'VariableDeclaration',
      kind: 'var',
      declarations: [{
        type: 'VariableDeclarator',
        id:   {type: 'Identifier', name: '_y'},
        init: {type: 'Identifier', name: 'y'}
      }]
    }, {
      type: 'VariableDeclaration',
      kind: 'var',
      declarations: [{
        type: 'VariableDeclarator',
        id: {type: 'Identifier', name: 'x'},
        init: {
          type: 'MemberExpression',
          object:   {type: 'Identifier', name: '_y'},
          property: {type: 'Identifier', name: 'x'},
          computed: false
        }
      }]
    }]
  }
}

@erboladaiteas/quaerat-exercitationem.generate

Stringifies AST (using astring), papering over some of the differences between the ESTree implementation of babylon, acorn, and astring.

@@erboladaiteas/quaerat-exercitationem/ast-types

TK

csspurefinduploadingviewjapanesereadjsdiffregexweaksetbannercommand-lineStyleSheetpropdeep-cloneECMAScript 2017upECMAScript 2022numbertakestarterautoprefixerclassnameReflect.getPrototypeOfimmutablepromiseglobalsECMAScript 2020parsewaapisimpledbAsyncIteratormapreducesubprocessdeep-copylinteveryservicetrimescapewritablemoduleObject.assignrangeerrordom-testing-libraryfantasy-landsyntaxineventsestreetransformObservablesi18nArray.prototype.findLastutilsMapeslint0guidkoreandataviewfindLastIndexhelpernameremoveES2015walkingapichaiwriteserverintrinsicglobshimstringifylanguagesetterzxcurlnodejscss-in-jsfast-copybusyes-abstractcallqueueMicrotasklogequalartInt16ArraylibphonenumbersetImmediatepushglobalshamtoobjectsyntaxerroroffsetdragfast-deep-copyeslintpluginvestelasticachereduxUint8ClampedArrayObjecteslintconfigUint32Arrayfunction.lengthserializeredacticonvcloudfrontprettyfunctionshashspecutil.inspectStreamcommandcolumnES2019striphasprivate datatoucharrayUint8Arrayhandlerexpressionschemazeromobile@@toStringTagrouteUnderscoresuperstructrulespostcssdefinePropertyReactiveXtc39ecmascriptinvariantpyyamlkinesisa11ybrowserlistoptimistsortedcallbackperformantpicomatchFloat64Arraycharactersoutputcloudformationdebuggerreact-hooksclassesserializationInt8ArrayRxschemeprotointernal slotcensorerrorawesomesaucepatchclass-validatores5typesafecallbindnpmignorehelpershasOwnPropertyminimalrobustpopmotionObject.entriestape.envflatobjectcoverageCSScall-boundgroupBydependency managerreducerlocalnativequeryefficientargsiambuffersswfproxypipeoptionfind-uprecursiveworkspace:*look-upicusharedarraybufferyupvaluesshellstreamstoragegatewaybdds3appforkvalidfastclonetapgetternopeutilitiestypeargvconsolejestbrowserslistwafcryptopostcss-plugincontainsconcatArray.prototype.flatMapyamlbeanstalklistenerstelephonerequesthooksl10nhigher-orderBigUint64ArrayES2022regularmockclonebinpackage managerfast-deep-cloneECMAScript 6slotindicatorvalueframerresolvetrimEndfsmanipulationexecfileassertionrdstoolscreatepackageuninstallendpointendertoolkitES2018ebsdeterministicfull-widthregular expressionstslibgraphqlcollectionprogresscoerciblepositivecolorsdayjsObject.definePropertyhasOwnstylingcheckECMAScript 2016structuredCloneregular expressiontraverseponyfilljshintphonefast-cloneimmerextendenvironmentURLinstrumentationregular-expressionworkflowPromisedataflagstypedarraysqueuespeedtesterinstalleruuidArray.prototype.flatfindjsxeventDispatcherhardlinksString.prototype.trimconcatMaptypesWeakMapspawnsameValueZerorequiresymlinksconsumeframeworkuser-streamscircularmatchimportmapjson cacheprefixstyleguidegetOwnPropertyDescriptorchromefileinternaltrimRightomitdirectorywarningrapidbrowsersomeasyncformatUint16ArrayWebSockettextrestfulArray.prototype.flattenpreprocessorarraybufferignorereworkreact-hook-formentriescloudtrailes-shimses7configurableassertES8electrondataViewBigInt64ArrayutilsidejoiloadbalancingArray.prototype.findLastIndexquotenamesasterisksparentIteratorSetArray.prototype.containsmatchesrmdirsearchbundlingtranspilerairbnbramdanpmdeepclonetermdeeproute53boundstreamsinspectES6privatevalidationpathRFC-6455react poseassignback-endacorncoresqscolourrm -rfpackagesttysortdynamodbespreeform-validationes8colorStreamsclientjasmineflattenkey parmergestylesObject.valuesobjsettingsfilterECMAScript 7keyenvironmentsamazonreactrgbkarmareusevariablescloudwatchinstallES7validateec2prototypeYAMLObject.iscall-bindgetintrinsicES2020whatwgtoArraychromiumagentdebugvpcparentsperformancesafeECMAScript 5xmlexeclookstabletypedarrayutilitydeepcopyatomsymbolsObservablees2018getoptrouterbundlerterminalredirectreducemomenttestingfastifyObject.fromEntriesfile cachepropertytoSortedfpidreact animationtddfixed-widthserializeroncewidthmakecomputed-typesxhrmake dirWeakSetsymbolbinaryargumentfastFloat32Arraynegative zeronodecurriedwaitreal-timefullfunctionfunctionalSymbol.toStringTagprocessES2021JSON-Schemaajvcloudsearch
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1.0.0

1 year ago