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https://github.com/matheus23/elmjs-inspect.git
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🎉 Initial Commit
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commit
601c8f4694
2
.gitignore
vendored
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2
.gitignore
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/dist
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/node_modules
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8
README.md
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README.md
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# elmjs-inspect
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## TODO
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* Wrap with CLI stuff (commander?)
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* Allow giving .js file by options or otherwise by file input (inquirer.js?)
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* Show results by package/module/file level
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* NPM Publish
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19
package.json
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19
package.json
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{
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"name": "sizes",
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"version": "1.0.0",
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"main": "src/index.ts",
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"license": "MIT",
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"scripts": {
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"repl": "ts-node --project .",
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"build": "tsc"
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},
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"type": "module",
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"devDependencies": {
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"@types/esprima": "^4.0.2",
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"@types/node": "^13.11.0",
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"typescript": "^3.8.3"
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},
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"dependencies": {
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"esprima": "^4.0.1"
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}
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}
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65
src/analyse.ts
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65
src/analyse.ts
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import * as FS from 'fs';
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import * as Console from 'console';
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import { promisify } from 'util';
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import * as Esprima from 'esprima';
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import * as ESTree from 'estree';
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function* yieldElmJsDefinitionInfos(script: Esprima.Program) {
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for (const statement of yieldElmJsStatements(script)) {
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yield* yieldFunctionDeclarationInfo(statement);
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yield* yieldVariableDeclarationInfos(statement);
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}
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}
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function* yieldElmJsStatements(script: Esprima.Program) {
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for (const e of script.body) {
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if (e.type === 'ExpressionStatement'
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&& e.expression.type === 'CallExpression'
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&& e.expression.callee.type === 'FunctionExpression') {
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yield* e.expression.callee.body.body;
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}
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};
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}
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function* yieldFunctionDeclarationInfo(statement: ESTree.Statement) {
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if (statement.type === 'FunctionDeclaration') {
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yield {
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name: statement.id.name,
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range: statement.range
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};
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}
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}
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function* yieldVariableDeclarationInfos(statement: ESTree.Statement) {
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if (statement.type === 'VariableDeclaration') {
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for (const declaration of statement.declarations) {
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if (declaration.id.type === 'Identifier') {
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yield {
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name: declaration.id.name,
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range: declaration.range
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};
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}
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}
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}
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}
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function rangeSize([start, end]) {
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return end - start;
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}
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function pct(value: number, of: number) {
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return `${Number(value / of * 100).toFixed(3)}%`
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}
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export async function analyse(elmOutputJsFilePath: string) {
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const file = await promisify(FS.readFile)(elmOutputJsFilePath);
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const parsed = Esprima.parseScript(file.toString(), { range: true });
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const size = parsed.range;
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const infos = Array.from(yieldElmJsDefinitionInfos(parsed));
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infos.sort((a, b) => rangeSize(b.range) - rangeSize(a.range));
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infos.forEach(({ name, range }) => {
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Console.log(`${pct(rangeSize(range), rangeSize(size))}: ${name}`);
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});
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const rangeSum = infos.map(({ range }) => rangeSize(range)).reduce((a, b) => a + b, 0);
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Console.log(`Range sum: ${rangeSum} total: ${rangeSize(size)}, analized ${pct(rangeSum, rangeSize(size))}`);
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}
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10
tsconfig.json
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tsconfig.json
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{
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"compilerOptions": {
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// "target": "ES2019",
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"downlevelIteration": true,
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"outDir": "dist"
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},
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"files": [
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"src/index.ts"
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]
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}
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30
yarn.lock
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yarn.lock
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# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
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# yarn lockfile v1
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"@types/esprima@^4.0.2":
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version "4.0.2"
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resolved "https://registry.yarnpkg.com/@types/esprima/-/esprima-4.0.2.tgz#0303602d0644086d4802635d7abc9ac0eec57207"
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integrity sha512-DKqdyuy7Go7ir6iKhZ0jUvgt/h9Q5zb9xS+fLeeXD2QSHv8gC6TimgujBBGfw8dHrpx4+u2HlMv7pkYOOfuUqg==
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dependencies:
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"@types/estree" "*"
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"@types/estree@*":
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version "0.0.44"
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resolved "https://registry.yarnpkg.com/@types/estree/-/estree-0.0.44.tgz#980cc5a29a3ef3bea6ff1f7d021047d7ea575e21"
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integrity sha512-iaIVzr+w2ZJ5HkidlZ3EJM8VTZb2MJLCjw3V+505yVts0gRC4UMvjw0d1HPtGqI/HQC/KdsYtayfzl+AXY2R8g==
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"@types/node@^13.11.0":
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version "13.11.0"
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resolved "https://registry.yarnpkg.com/@types/node/-/node-13.11.0.tgz#390ea202539c61c8fa6ba4428b57e05bc36dc47b"
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integrity sha512-uM4mnmsIIPK/yeO+42F2RQhGUIs39K2RFmugcJANppXe6J1nvH87PvzPZYpza7Xhhs8Yn9yIAVdLZ84z61+0xQ==
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esprima@^4.0.1:
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version "4.0.1"
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resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
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integrity sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==
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typescript@^3.8.3:
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version "3.8.3"
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resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
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integrity sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==
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