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feat: support jsTruthy, #255 #257

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harttle
2020-10-08 13:11:02 +08:00
parent f807383f2a
commit 72ee7b4c1e
6 changed files with 68 additions and 18 deletions
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docs/source/tutorials/truthy-and-falsy.md
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@@ -22,6 +22,25 @@ value | truthy | falsy
`array` | ✔️ |
`empty array` | ✔️ |
## Use JavaScript Truthy
Note that liquidjs use Shopify's truthiness by default. But it can be toggled to used standard JavaScript truthiness by setting the **jsTruthy** option to `true`.
value | truthy | falsy
--- | --- | ---
`true` | ✔️ |
`false` | | ✔️
`null` | | ✔️
`undefined` | | ✔️
`string` | ✔️ |
`empty string` | | ✔️
`0` | | ✔️
`integer` | ✔️ |
`float` | ✔️ |
`array` | ✔️ |
`empty array` | ✔️ |
[ruby]: https://shopify.github.io/liquid
[sl]: https://www.npmjs.com/package/liquidjs
[diff]: https://github.com/harttle/liquidjs#differences-and-limitations
docs/source/zh-cn/tutorials/options.md
+6
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@@ -63,6 +63,12 @@ LiquidJS 把这个选项默认值设为 <code>true</code> 以兼容于 shopify/l
**globals** 用来定义对所有模板可见的全局变量。包括 [render tag][render] 引入的子模板，见 [3185][185]。
## jsTruthy
**jsTruthy** 用来使用 Javascript 的真值判断，默认为 `false` 使用 Shopify 方式。
例如，空字符串在 JavaScript 中为假（`jsTruthy` 为 `true` 时），在 Shopify 真值表中为真。
## 换行和缩进
**greedy**, **trimOutputLeft**, **trimOutputRight**, **trimTagLeft**, **trimTagRight** 选项用来移除 Liquid 语法周围的换行和缩进，详情请参考 [Whitespace Control][wc]。
docs/source/zh-cn/tutorials/truthy-and-falsy.md
+19 -1
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@@ -8,7 +8,7 @@ title: 真和假
根据 [Shopify 的文档](https://shopify.github.io/liquid/basics/truthy-and-falsy/)，Ruby 版本除了 `false` 和 `nil` 之外的所有值都是真，但 JavaScript 有完全不同的类型系统，比如我们有 `undefined` 类型，以及不区分 `integer` 和 `float`，因此有些不同：
value | truthy | falsy
值 | 真 | 假
--- | --- | ---
`true` | ✔️ |
`false` | | ✔️
@@ -22,6 +22,24 @@ value | truthy | falsy
`array` | ✔️ |
`empty array` | ✔️ |
## 使用 JavaScript 真值
liquidjs 默认使用 Shopify 的真值表，但可以通过设置 **jsTruthy** 选项为 `true` 来使用标准的 JavaScript 真值。
值 | 真 | 假
--- | --- | ---
`true` | ✔️ |
`false` | | ✔️
`null` | | ✔️
`undefined` | | ✔️
`string` | ✔️ |
`empty string` | | ✔️
`0` | | ✔️
`integer` | ✔️ |
`float` | ✔️ |
`array` | ✔️ |
`empty array` | ✔️ |
[ruby]: https://shopify.github.io/liquid
[sl]: https://www.npmjs.com/package/liquidjs
[diff]: https://github.com/harttle/liquidjs#differences-and-limitations
src/liquid-options.ts
+1 -1
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@@ -11,7 +11,7 @@ export interface LiquidOptions {
extname?: string;
/** Whether or not to cache resolved templates. Defaults to `false`. */
cache?: boolean | number | Cache<Template[]>;
/** Use Javascript Truthiness.Defaults to `false`. */
/** Use Javascript Truthiness. Defaults to `false`. */
jsTruthy?: boolean;
/** If set, treat the `filepath` parameter in `{%include filepath %}` and `{%layout filepath%}` as a variable, otherwise as a literal value. Defaults to `true`. */
dynamicPartials?: boolean;
test/integration/liquid/liquid.ts
+1 -1
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@@ -19,7 +19,7 @@ describe('Liquid', function () {
it('should call plugin with Liquid', async function () {
const engine = new Liquid()
engine.plugin(function () {
this.registerFilter('t', isFalsy)
this.registerFilter('t', function (v) { return isFalsy(v, this.context) })
})
const html = await engine.parseAndRender('{{false|t}}')
expect(html).to.equal('true')
test/unit/render/boolean.ts
+22 -15
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@@ -1,38 +1,45 @@
import { isTruthy, isFalsy } from '../../../src/render/boolean'
import { Context } from '../../../src/context/context'
import { expect } from 'chai'
describe('boolean Shopify', async function () {
describe('.isTruthy()', async function () {
const ctx = {
opts: {
jsTruthy: false
}
} as unknown as Context
//
// Spec: https://shopify.github.io/liquid/basics/truthy-and-falsy/
it('true is truthy', function () {
expect(isTruthy(true)).to.be.true
expect(isTruthy(true, ctx)).to.be.true
})
it('false is falsy', function () {
expect(isTruthy(false)).to.be.false
expect(isTruthy(false, ctx)).to.be.false
})
it('null is falsy', function () {
expect(isTruthy(null)).to.be.false
expect(isTruthy(null, ctx)).to.be.false
})
it('"foo" is truthy', function () {
expect(isTruthy('foo')).to.be.true
expect(isTruthy('foo', ctx)).to.be.true
})
it('"" is truthy', function () {
expect(isTruthy('')).to.be.true
expect(isTruthy('', ctx)).to.be.true
})
it('0 is truthy', function () {
expect(isTruthy(0)).to.be.true
expect(isTruthy(0, ctx)).to.be.true
})
it('1 is truthy', function () {
expect(isTruthy(1)).to.be.true
expect(isTruthy(1, ctx)).to.be.true
})
it('1.1 is truthy', function () {
expect(isTruthy(1.1)).to.be.true
expect(isTruthy(1.1, ctx)).to.be.true
})
it('[1] is truthy', function () {
expect(isTruthy([1])).to.be.true
expect(isTruthy([1], ctx)).to.be.true
})
it('[] is truthy', function () {
expect(isTruthy([])).to.be.true
expect(isTruthy([], ctx)).to.be.true
})
})
})
@@ -42,11 +49,11 @@ describe('boolean jsTruthy', async function () {
opts: {
jsTruthy: true
}
}
} as unknown as Context
describe('.isFalsy()', async function () {
it('null is always falsy', function () {
expect(isFalsy(null, ctx)).to.be.false
expect(isFalsy(null, ctx)).to.be.true
})
})
@@ -58,7 +65,7 @@ describe('boolean jsTruthy', async function () {
expect(isTruthy(false, ctx)).to.be.false
})
it('null is always falsy', function () {
expect(isTruthy(null, ctx)).to.be.true
expect(isTruthy(null, ctx)).to.be.false
})
it('null is always falsy', function () {
expect(isTruthy(null, ctx)).to.be.false
@@ -81,8 +88,8 @@ describe('boolean jsTruthy', async function () {
it('[1] is truthy', function () {
expect(isTruthy([1], ctx)).to.be.true
})
it('[] is falsy', function () {
expect(isTruthy([], ctx)).to.be.false
it('[] is truthy', function () {
expect(isTruthy([], ctx)).to.be.true
})
})
})