Closed peerreynders closed 3 months ago
SleeplessByte
commented
3 years ago It seems that some how https://github.com/exercism/typescript-test-runner/blob/main/package.json#L32-L33 aren't correctly moved/injected into the solution.
You should be able to use anything from @types/node, so this is a bug.
SleeplessByte
commented
3 months ago @types/node is only a type package, so this bug, if any, is in the test-runner. Moving this issue there.
github-actions[bot]
commented
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Please use this 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b/JavaScript/Reference/Global_Objects/Math/random#content):%0D%0A%0D%0A%3E%20**Note:**%20%60Math.random()%60%20does%20not%20provide%20cryptographically%20secure%20random%20numbers.%20Do%20not%20use%20them%20for%20anything%20related%20to%20security.%20Use%20the%20Web%20Crypto%20API%20instead,%20and%20more%20precisely%20the%20%60window.crypto.getRandomValues()%60%20method.%0D%0A%0D%0Athat%20remark%20may%20as%20well%20be%20a%20deprecation%20notice%20-%20i.e.%20one%20needs%20to%20also%20know%20how%20to%20use%20%60crypto.getRandomValues()%60%20or%20%60crypto.randomFillSync()%60.%0D%0A%0D%0A---%0D%0A%0D%0AUpdate:%20Using%20%60crypto%60%20worked%20fine%209%20days%20ago%20with%20the%20%5BSimple%20Cipher%20exercise%5D(https://exercism.org/tracks/typescript/exercises/simple-cipher/solutions/peerreynders)&category=typescript 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SleeplessByte
commented
3 months ago
Caveat: I'm not sure whether I'm observing intended behaviour or not. It could be a "It Works On My Machine" kind of problem - perhaps it is not.
The symptoms suggest that platform side
@types/nodeisn't installed when the tests are run (perhaps that is intentional).The error message is as follows:
Example solution affected.
dnd-abilities-scores.ts
```typescript import crypto from 'crypto'; declare const abilitiesRollBrand: unique symbol; type AbilitiesRoll = number & { [abilitiesRollBrand]: true; }; const SCORE_COUNT = 6; const SCORE_MAX_INDEX = SCORE_COUNT - 1; const SCORE_BITS = 4; const SCORE_MASK = ((): number => { let mask = 1; for (let i = 1; i < SCORE_BITS; i += 1, mask = (mask << 1) | 1); return mask; })(); const SCORE_MIN = 3; const SCORE_MAX = toScore(SCORE_MASK); function errorScoreIndex(index: number): Error { return new Error(`'${index}' is not a valid score index`); } function toScore(value: number): number { return (SCORE_MASK & value) + SCORE_MIN; } function getScore(rollValues: AbilitiesRoll, index: number): number { if (index < 0 || SCORE_MAX_INDEX < index) throw errorScoreIndex(index); return toScore(rollValues >>> (index * SCORE_BITS)); } function rollToScores(rollValues: AbilitiesRoll): number[] { const scores: number[] = []; for ( let i = 0, values = rollValues as number; i < SCORE_COUNT; i += 1, values >>>= SCORE_BITS ) scores[i] = toScore(values); return scores; } const targetBuffer = new Uint32Array(1); function roll(): AbilitiesRoll { crypto.randomFillSync(targetBuffer); return targetBuffer[0] as AbilitiesRoll; } function toModifier(value: number): number { return (value - 10) >> 1; } export { roll, rollToScores, SCORE_MIN, SCORE_MAX, toModifier, getScore, SCORE_MAX_INDEX, }; ```
dnd-character.ts
```typescript import * as AbilityScores from './dnd-ability-scores'; const { roll, rollToScores, toModifier } = AbilityScores; const HITPOINTS_INITIAL = 10; const ABILITIES_ORDERED = [ 'strength', 'dexterity', 'constitution', 'intelligence', 'wisdom', 'charisma', ] as const; type AbilityKey = typeof ABILITIES_ORDERED[number]; type Abilities = Record;
type AbilityTarget = Partial;
function rollAbilities(): Abilities {
const scores = rollToScores(roll());
return ABILITIES_ORDERED.reduce((target, key, i) => {
target[key] = scores[i];
return target;
}, {}) as Abilities;
}
class DnDCharacter {
#abilities: Abilities;
#hitpoints: number;
constructor() {
const abilities = rollAbilities();
this.#hitpoints = HITPOINTS_INITIAL + toModifier(abilities.constitution);
this.#abilities = abilities;
}
get strength(): number {
return this.#abilities.strength;
}
get dexterity(): number {
return this.#abilities.dexterity;
}
get constitution(): number {
return this.#abilities.constitution;
}
get intelligence(): number {
return this.#abilities.intelligence;
}
get wisdom(): number {
return this.#abilities.wisdom;
}
get charisma(): number {
return this.#abilities.charisma;
}
get hitpoints(): number {
return this.#hitpoints;
}
static generateAbilityScore(): number {
return AbilityScores.getScore(roll(), AbilityScores.SCORE_MAX_INDEX);
}
static getModifierFor(abilityValue: number): number {
return toModifier(abilityValue);
}
}
export { DnDCharacter };
```
Clearly the
package.jsondownloaded with the CLI installs@types/nodewhich is why no such error occurs locally.I've stopped using
Math.random()ever since I ran into this:that remark may as well be a deprecation notice - i.e. one needs to also know how to use
crypto.getRandomValues()orcrypto.randomFillSync().Update: Using
cryptoworked fine 9 days ago with the Simple Cipher exercise