deflateSync/inflateSync only build

[Leander Berg]

The docs say If you want a small build without build tools, please ask me and I will make one manually with only the features you need. so I'll just ask this here, would appreciate it if you have some time for it, but no worries otherwise.
I'm doing a buildless esm page and want to use compression on text, specifically the deflateSync and inflateSync functions with strToU8 and strFromU8 to get the data into the correct format.

If there was a build with just these 4 functions, I'd be extremely grateful! ❤️

[101arrowz]

I made a build that exports those four functions in ESM format for you. Here's the file (~9kB, 4.5kB gzipped):

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n(f),t=0;t<f;++t)r[t]&&(i[t]=h[u[r[t]-1]++]>>>15-r[t]);return i},m=new r(288);for(g=0;g<144;++g)m[g]=8;for(g=144;g<256;++g)m[g]=9;for(g=256;g<280;++g)m[g]=7;for(g=280;g<288;++g)m[g]=8;var b=new r(32);for(g=0;g<32;++g)b[g]=5;var y=d(m,9,0),p=d(m,9,1),E=d(b,5,0),M=d(b,5,1),k=function(r){for(var n=r[0],e=1;e<r.length;++e)r[e]>n&&(n=r[e]);return n},C=function(r,n,e){var a=n/8|0;return(r[a]|r[a+1]<<8)>>(7&n)&e},T=function(r,n){var e=n/8|0;return(r[e]|r[e+1]<<8|r[e+2]<<16)>>(7&n)},x=function(r){return(r+7)/8|0},S=function(a,f,t){(null==f||f<0)&&(f=0),(null==t||t>a.length)&&(t=a.length);var o=new(2==a.BYTES_PER_ELEMENT?n:4==a.BYTES_PER_ELEMENT?e:r)(t-f);return o.set(a.subarray(f,t)),o},A=["unexpected EOF","invalid block type","invalid length/literal","invalid distance","stream finished","no stream handler",,"no callback","invalid UTF-8 data","extra field too long","date not in range 1980-2099","filename too long","stream finishing","invalid zip data"],U=function(r,n,e){var a=new 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J=N.subarray(0,D),K=N.subarray(D);y=k(J),E=k(K),m=d(J,y,1),b=d(K,E,1)}else U(1);if(g>A){l&&U(0);break}}v&&s(w+131072);for(var Q=(1<<y)-1,V=(1<<E)-1,W=g;;W=g){var X=(H=m[T(n,g)&Q])>>>4;if((g+=15&H)>A){l&&U(0);break}if(H||U(2),X<256)e[w++]=X;else{if(256==X){W=g,m=null;break}var Z=X-254;if(X>264){var $=a[R=X-257];Z=C(n,g,(1<<$)-1)+u[R],g+=$}var rr=b[T(n,g)&V],nr=rr>>>4;rr||U(3),g+=15&rr;K=c[nr];if(nr>3){$=f[nr];K+=T(n,g)&(1<<$)-1,g+=$}if(g>A){l&&U(0);break}v&&s(w+131072);for(var er=w+Z;w<er;w+=4)e[w]=e[w-K],e[w+1]=e[w+1-K],e[w+2]=e[w+2-K],e[w+3]=e[w+3-K];w=er}}o.l=m,o.p=W,o.b=w,o.f=h,m&&(h=1,o.m=y,o.d=b,o.n=E)}while(!h);return w==e.length?e:S(e,0,w)},q=function(r,n,e){e<<=7&n;var a=n/8|0;r[a]|=e,r[a+1]|=e>>>8},B=function(r,n,e){e<<=7&n;var a=n/8|0;r[a]|=e,r[a+1]|=e>>>8,r[a+2]|=e>>>16},D=function(e,a){for(var f=[],t=0;t<e.length;++t)e[t]&&f.push({s:t,f:e[t]});var o=f.length,i=f.slice();if(!o)return[z,0];if(1==o){var u=new r(f[0].s+1);return u[f[0].s]=1,[u,1]}f.sort((function(r,n){return r.f-n.f})),f.push({s:-1,f:25001});var v=f[0],l=f[1],c=0,s=1,h=2;for(f[0]={s:-1,f:v.f+l.f,l:v,r:l};s!=o-1;)v=f[f[c].f<f[h].f?c++:h++],l=f[c!=s&&f[c].f<f[h].f?c++:h++],f[s++]={s:-1,f:v.f+l.f,l:v,r:l};var g=i[0].s;for(t=1;t<o;++t)i[t].s>g&&(g=i[t].s);var w=new n(g+1),d=F(f[s-1],w,0);if(d>a){t=0;var m=0,b=d-a,y=1<<b;for(i.sort((function(r,n){return w[n.s]-w[r.s]||r.f-n.f}));t<o;++t){var p=i[t].s;if(!(w[p]>a))break;m+=y-(1<<d-w[p]),w[p]=a}for(m>>>=b;m>0;){var E=i[t].s;w[E]<a?m-=1<<a-w[E]++-1:++t}for(;t>=0&&m;--t){var M=i[t].s;w[M]==a&&(--w[M],++m)}d=a}return[new r(w),d]},F=function(r,n,e){return-1==r.s?Math.max(F(r.l,n,e+1),F(r.r,n,e+1)):n[r.s]=e},L=function(r){for(var e=r.length;e&&!r[--e];);for(var a=new n(++e),f=0,t=r[0],o=1,i=function(r){a[f++]=r},u=1;u<=e;++u)if(r[u]==t&&u!=e)++o;else{if(!t&&o>2){for(;o>138;o-=138)i(32754);o>2&&(i(o>10?o-11<<5|28690:o-3<<5|12305),o=0)}else 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rr=Z[$];for(Y=0;Y<rr.length;++Y){var nr=31&rr[Y];q(e,g,X[nr]),g+=O[nr],nr>15&&(q(e,g,rr[Y]>>>5&127),g+=rr[Y]>>>12)}}}else H=y,I=m,J=E,K=b;for(Y=0;Y<c;++Y)if(i[Y]>255){nr=i[Y]>>>18&31;B(e,g,H[nr+257]),g+=I[nr+257],nr>7&&(q(e,g,i[Y]>>>23&31),g+=a[nr]);var er=31&i[Y];B(e,g,J[er]),g+=K[er],er>3&&(B(e,g,i[Y]>>>5&8191),g+=f[er])}else B(e,g,H[i[Y]]),g+=I[i[Y]];return B(e,g,H[256]),g+I[256]},Y=new e([65540,131080,131088,131104,262176,1048704,1048832,2114560,2117632]),z=new r(0),O=function(t,o,i,u,l,c){var h=t.length,g=new r(u+h+5*(1+Math.ceil(h/7e3))+l),w=g.subarray(u,g.length-l),d=0;if(!o||h<8)for(var m=0;m<=h;m+=65535){var b=m+65535;b>=h&&(w[d>>3]=c),d=P(w,d+1,t.subarray(m,b))}else{for(var y=Y[o-1],p=y>>>13,E=8191&y,M=(1<<i)-1,k=new n(32768),C=new n(M+1),T=Math.ceil(i/3),A=2*T,U=function(r){return(t[r]^t[r+1]<<T^t[r+2]<<A)&M},_=new e(25e3),q=new n(288),B=new n(32),D=0,F=0,L=(m=0,0),N=0,O=0;m<h;++m){var j=U(m),G=32767&m,H=C[j];if(k[G]=H,C[j]=G,N<=m){var 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TextEncoder,J="undefined"!=typeof TextDecoder&&new TextDecoder;try{J.decode(z,{stream:!0}),1}catch(r){}var K=function(r){for(var n="",e=0;;){var a=r[e++],f=(a>127)+(a>223)+(a>239);if(e+f>r.length)return[n,S(r,e-1)];f?3==f?(a=((15&a)<<18|(63&r[e++])<<12|(63&r[e++])<<6|63&r[e++])-65536,n+=String.fromCharCode(55296|a>>10,56320|1023&a)):n+=1&f?String.fromCharCode((31&a)<<6|63&r[e++]):String.fromCharCode((15&a)<<12|(63&r[e++])<<6|63&r[e++]):n+=String.fromCharCode(a)}};function Q(n,e){if(e){for(var a=new r(n.length),f=0;f<n.length;++f)a[f]=n.charCodeAt(f);return a}if(I)return I.encode(n);var t=n.length,o=new r(n.length+(n.length>>1)),i=0,u=function(r){o[i++]=r};for(f=0;f<t;++f){if(i+5>o.length){var v=new r(i+8+(t-f<<1));v.set(o),o=v}var l=n.charCodeAt(f);l<128||e?u(l):l<2048?(u(192|l>>6),u(128|63&l)):l>55295&&l<57344?(u(240|(l=65536+(1047552&l)|1023&n.charCodeAt(++f))>>18),u(128|l>>12&63),u(128|l>>6&63),u(128|63&l)):(u(224|l>>12),u(128|l>>6&63),u(128|63&l))}return S(o,0,i)}function V(r,n){if(n){for(var e="",a=0;a<r.length;a+=16384)e+=String.fromCharCode.apply(null,r.subarray(a,a+16384));return e}if(J)return J.decode(r);var f=K(r),t=f[0];return f[1].length&&U(8),t}"function"==typeof queueMicrotask?queueMicrotask:"function"==typeof setTimeout&&setTimeout;export{G as deflateSync,H as inflateSync,V as strFromU8,Q as strToU8}

You can paste this into e.g. fflate.js and do the following:

import {inflateSync, deflateSync, strFromU8, strToU8} from './fflate.js';
console.log(strFromU8(inflateSync(deflateSync(strToU8('hello world')))));

There are ways to hand optimize this further but it's not really necessary. Let me know if this works for you!